Kipnis clearly doesn't think much of the Ewell paper, but I don't think her point centers on its contents; it's more that someone collected and published scholarly responses to the paper, and the social media pushback against these responses led to a grad student narcing on his professor and the professor losing funding, the journal, etc. That, to me, is not a healthy dynamic for a university to run on.

edit: Actually let me go a step further and agree with you a bit - I think Kipnis's point would be more clearly made if she didn't make her own perspective on the merits of the Ewell paper such a big part of that section of the article.