It's jarring to you because someone else reframed the post as "don't use JWT" (a thing I believe!), and that's not what it's about. See, here, the power of people to control the terms in which people read and think about subjects by creating their own titles to things!
My main takeaway from it that JWTs aren't magical, there's exploit vectors that need to be taken into account, and as any security related thing, you need to do your homework to have a decently secured application.
That's pretty far from "don't use JWT"