I think this is probably an organic result of confused people who WANT to comment on the FCC site but ended up here by mistake. If you type "gofccyourself" into google, the top three results are

(1) a product hunt page with a John Oliver video but no above-the-fold link to the FCC or to http://gofccyourself.com.

(2) the confusing FCC "proceedings" page https://www.fcc.gov/ecfs/search/proceedings?q=name:((17-108)) where it is not obvious how to comment

(3) this Hacker News thread (starting at grandparent post), labeled in google as "Clickable link : http://gofccyourself.com | Hacker News".

So a random internet user looking for a place to comment and knowing the term "gofccyourself" easily ends up here, at a page with the "Hacker News" banner, a one sentence "Clickable Link : http://gofccyourself.com ", and then a comment box. Below is the comment thread following full of new users' comments about net neutrality. Some visitors assume this IS the FCC comment site.

So when you go through the funnels of : type "gofccyourself" into address bar or search box --> get to third search result --> misunderstand this thread as the FCC public comment venue --> bother to register and comment, then you get the steady stream of comments here from newly registered accounts.