How about lets make specific points about what makes the claim invalid instead?
First, the issue with this thread (and several like it in recent weeks) is the beginning assumption of the correctness of the points made. The article is not put forth for discussion; rather, it's posted for people to voice their agreement. There's a fundamental lack of critical engagement with the writing from those promoting it.
Which leads to, second,...
Not that I have any super strong opinion on this article itself, but are you really suggesting that we are supposed to build a case invalidating a claim in an article before the article itself builds any case for the point it is trying to make?
Threads like these that put forth an opinionated article from armchair bloggers (not a source deserving of the deferrence given to an authority on a subject) as Correct, thereby putting the burden on someone who doesn't agree with the opinions and musings of a blogger to give a detailed breakdown of why they disagree, yet the initial points were never properly proven or argued.
Here, a writer observes an asshole, makes a quick connection between asshole being a white guy + society favoring white guys = easier for white guys to get excused for asshole behavior, and extrapolates far beyond that without solid ground to stand on. The author, by the end, hasn't demonstrated anything. The assumptions from the OP and others is that, in fact, there's rock-solid fact behind her musings on such nonsense:
Skipping ahead of people in line, even when invited to do so, is better referred to as “being an asshole.” And obliviousness to your own privilege is no excuse. If you’re absorbed in your phone and not really sure if you’re rightfully next in line, it’s your job to look around and say, “I’m sorry, were you here before me?”
The only establishment of how the underlined statement is relevant to her anecdote is her own belief. Great. That proves... nothing, actually. The burden does not lay with me to demonstrate the flaws due to assumption exist. It's on the writer to close those gaps.
By being an adult about it and not getting hung up over one stupid phrase? We managed to do it back in the early to mid 2000s when we started calling out people for being "grammar nazis" vs. actually partaking in discussion.
It's disingenuous BS. I ask people not to come in with the "lol tumblr, this shit again" posts, so OF COURSE they find something else to latch onto in order to be dismissive pricks. It's trite and annoying and happens in every thread about racism.
The article can be rightfully dismissed and it doesn't make someone a prick for doing so.