See link above. It's exhaustive in detail, complete with multiple references to interviews by both and eyewitness accounts.
Speaking frankly, and this may seem like an fanboyish defense of Stan Lee, but nothing in that article remotely convinced me of anything.
About the Captain America issue, Stan Lee was crediting Joe Simon and Jack Kirby for Captain America long before Cannon Films had a screw up, and he was crediting them long after. And that's ultimately the thing... the Cannon Film ad was NOT by Marvel directly. It was by Cannon Films, a notoriously low-budget, zero-effort movie company that barely did any research and had a history of lazy efforts. They often pumped out ads like that for upcoming projects even before deals were finalized. I don't believe for one second that Stan Lee (then retired as Marvel's president and serving as just a publisher, but still with the company) mandated that Joe and Simon get excluded and he take sole credit. That's a mistake by Cannon Films (one that, the article fails to show, was corrected by the time the actual awful film came out), but not by Stan Lee.
Similarly, the article complains that you won't see Jack Kirby's name in the credits of The Avengers. But... that was also a promotional mistake. Jack Kirby's name is in the credits and the the article's info is outdated.
After attending a NY press screening, Moviefone can confirm that Jack Kirby's name is listed in the end credits as a co-creator. Previously, we referred to Kirby's omission from promotional materials of the upcoming film.
And Stan Lee gets a credit because he's the executive producer and usually IN THE FILMS, so of course he gets a credit.
Even then, when talking about the initial lack of Kirby's co-creator credit, Stan Lee openly said, "You're talking to the wrong guy. I have nothing to do with the credits on the movies."
Does that make everything right? Of course not. Joe Kirby deserves a credit, and he's been omitted from credit in certain promotional material before. But that's not because mean old Stan Lee was seeking to bury his legacy. That's some poor advertising guy not doing his job correctly.
If you like, as well, I have found quotes from every single writer complaining about Stan Lee's contributions (some of the quotes I noticed were out of context) at various times having many moments of praising his contributions and crediting his writing and involvement.
Even a statement like "Did I say Stanley had no smarts? Well, he DID come up with two sure fire ideas… the first one was “Why not let the artists WRITE the stories as well as draw them?”… And the second was … ALWAYS SIGN YOUR NAME ON TOP …BIG”... can be contradicted by the fact that one of Stan Lee's rules was to ensure his co-creators always had their names as big as his name was.
Lastly, I'll say that I do comics as a living as well. Funny, I never really looked into the "Marvel Method", but I'm actually shocked that Stan Lee's method of writing comics is almost IDENTICAL to how I and my collaborators handle comics.
Here's how we do it: say I come up with a story idea. I make a vague template, involving characters, villains, and plotlines. I send it to the artist. Taking my story template, he does the artwork and sends it back to me. I then take the artwork and do dialogue and flesh out the narrative based on what I'm seeing.
Based on that article, I would be accused of being a "lazy writer" or "taking credit for the artist's contributions". That's just not how it works, because it's a collaboration. We both get credit and we both build from nothing into something. Of course my artists get good ideas (and when I'm the artist, I do as well), and often we put things in the stories the writer didn't expect, and the writers roll with it and work with it. Artists love coming up with new ideas too. It's fun and how collaboration works.
So, yes, I disagree with your source link. Or more precisely, I disagree with the conclusions formed based on what was presented to me. Thank you for finding it, but know that I disagree.
Was Stan Lee a saint? No, he's human. We all are. Even in my comic job, i've lost my temper, let egos get the better of me, argued over "who did what" and tried to inject my ideas into stories that honestly had no business with me butting in... but that's part of any collaborative work with co-workers and teams. It's not all smooth sailing, and when everyone is on the same page, magic happens.
It's ridiculous to claim Stan Lee is an awful person, or that he seeks to take credit from other creators. He's never made a habit of that, and his actions side far more on his desire to acknowledge those that helped make comics. If I remember correctly, he was even one of the ones at Marvel that STARTED crediting people other than artists and writers, like inkers, editors, letterers, etc.
Honestly, Stan Lee benefited from also being a supremely charismatic, articulate, passionate, extroverted man who, unlike almost any other creator at the time, proudly stood in the spotlight and engaged his fans on a creator-to-fan level. He was smart and savvy enough to be the "Walt Disney face" of Marvel when nobody else was willing and, like Walt, was accused of using his popularity to overshadow other creators.
But that's not really Stan Lee's fault nor his intent. The same article you referenced has a granddaughter of Joe Simon lamenting the fact that many people believe Stan Lee created Captain America... but that's the same as someone believing that Shigeru Miyamoto created Metroid or that Walt Disney created Scrooge McDuck. Someone's ignorance isn't always the more popular guy's fault.
Well, this turned rantier than I anticipated. Apologies if you read this far. As a comic creator myself, trust me, I'm the first to bristle at injustice against creators and the greedy and selfishness of some publishers, but I've never really bought the narrative that Stan Lee was one of the bad ones. Creative differences? Sure, but never spite or hate or creative theft.