There are several legitimate arguments about fanservice being bad and LGBT inclusion being good. If you'd actually looked at the Polygon article linked, you would have seen
a related opinion piece from another writer explaining what they liked about the show. And the word "gay" is only included twice.
The thing you do have to bear in mind is that Yuri!!! on ICE is
the most tweeted about anime of the season (thoroughly destroying it's nearest rival), so if you aren't deep, you can see why they might have assumed Yuri!!! on ICE would do much better. But also, the audience interested in Yuri!!! on ICE is from my purely anecdotal perspective the teenage K-POP listening girl that's constantly throwing parties about how #SomebodyYou'veNeverHeardOfIsOver and pretending they're a VIP or Army member on Twitter and Tumblr, so it becomes this re-enforced echo chamber. They aren't seeing the tweets about Keijo!!!!! or Sakura Trick or whatever that you or I are, they're only seeing a few shows, which have probably been dominated by Yuri!!! on Ice. That said, I really didn't appreciate the tone of that article, hence my criticism of it in the original post.
"Social Justice Warrior" as a term has become somewhat tainted since GamerGate. It's now generally only used by those who wish to dial back media attempts at progressiveness and inclusion, claiming that heterosexual men are having their heterosexual male pleasures taken away from them by such attempts. I appreciate it's possible to use it outside of this context, and it seems from your reply that you were, but SJW as a term isn't really used by anyone that isn't a "Men's Rights Activist" anymore, so it's a reasonably safe assumption to make...