The problem w/ the Plinkett videos (if this can be called THEIR problem, because it really isn't) is how they're used, and who is using them.
Usually they're slapped down as some sort of critical trump card by people who might not necessarily even understand all the criticisms contained within. They end up just basically being a conversational shortcut that works less as a ramp for conversations to jump off of, than a concrete wall for discussion to crash into.
I also find that type of usage does a disservice to why those videos were really shared as often as they were originally: the blend of comedy with film criticism. People tend to share them as if they're the be-all/end-all of analysis on Star Wars prequels, and I find that's giving those videos short-shrift, as their primary appeal is the way the analysis is blended with the comedy - most of the criticism is a combination of basic film-school shit, and synthesized/repurposed analysis from about a hundred other film writers looking at that movie. Not to say that shit isn't valuable, though. Basic film school shit is definitely worth learning if you're looking to enjoy your films on a level beyond simply just having plot points proceeded through as efficiently and entertainingly as possible.
Not to mention that slapping up a link to a series of film "reviews" that are longer than the films themselves isn't as helpful as it seems at the time