So - it's a conspiracy?!
[Personally, I am open-minded. I do struggle to see the immediate pay-off for the author of this blog, while I do see a pay-off in the context of an astroturfing campaign.]
The payoffs in satisfaction to people that (i) like bragging/confessing about what they actually do or (ii) like cosplaying the antiwork rebel seems more obvious
There are various interest group associations, which can work towards a surprisingly generic goals. One interesting example https://news.ycombinator.com/item?id=8416853 (with all the caveats mentioned in comments).
It's really not hard to hide your tracks from general public - literally just setting up new accounts does the trick. The hard part is having the thing reach the surface, but 1) a lot of things here are also really easy to hide (reddit upvotes and posts from accounts with history are cheap) and 2) if you're doing your job right you don't need a lot of it.
Near impossibility of avoiding both false positives and negatives is a pretty fundamental issue/feature of that kind of activity. I really don't know how I could do more meaningful digging.
Blog posts are really bad tho.
But I think that pretty soon, with help of various tools, injecting fake info on the net will be so easy and cheap that the only way to know truth from fake will be with the help of AI agents. If it's not already...
Not taking a position on this particular site, but there's plenty of financial benefits here.
I wonder if you are overestimating the effort. Hire a contractor to throw together a few blog posts and then spend single-digit thousands to promote/boost it in various spots.