Getting worked up over a Jacobin article is about as useful as getting worked up over a Breitbart article. Edit: Not that I'm saying you shouldn't get worked up. Not trying to belittle your very valid points--just pointing out that they're a liberal clown show who doesn't deserve the respect of an honest critique.
They have the same problem the old party newspapers had. They're committed to the one kind of analysis, and it's not appropriate for everything, but they need a certain volume of articles within a fixed span of time. But I don't think this post is ridiculous, its gist is the same as Graeber's work on manners, that having to follow the rules that are ingrained in the elites to interact easily with elites helps keep the elites' families elite.