This has literally nothing to do with the article, and really nothing to do with almost any usage of the term I've seen. I pretty much always see it as a kind of incoherent insult that, like this usage here, isn't based in any kind of reality but instead just makes the person writing it feel good about themselves for some reason.

You are stating your opposition to feelgoodery, thereby currying favor with those in your anti-feelgoodery camp by showing how anti-feelgoodery you are. But secretly of course I'm saying you don't really believe that. You are not that opposed to feelgoodery, you're just trying to get brownie points and make yourself feel good (ironically).

Again, that's not what I think, but IMO that's what the use of the phrase has mostly become.