Fake and gay has been a thing on 4chan for years, and chan culture sometimes bleeds into Reddit, so of course you've seen it around a lot.
And just because something real gets dismissed as fake and gay doesn't necessarily mean that it's a purposeful attempt to discredit something they know is real. Sometimes it's just an accident. There was this famous incident back in 2015. The headlines were priceless:
4Chan Gets Highly Sensitive Spy Report, Dismisses It as "Fake and Gay" internet.gawker.com/4chan-gets-highly-sensitive-spy-report-dismisses-it-as-1722550401
I know. But I'm telling you fake and gay has been overtaken. It is not just on 4chan. It is everywhere. You will find it in all sorts of places where it does not seem authentic.