You probably know MN better than I do, I mostly only post here on FWR, just occasionally on other parts, so maybe the rest of it is full of pile ons, I'll take your word for it. Apart from the occasional flare-up, most of the posters here are not rude or dismissive, and engage in good faith unless they think a poster is just a stirrer or is taking the piss.
But you go on to say that
'GC posters particularly like an essay post with loads of studies' and 'point out research'
like that's a bad thing?
How else can you get the facts to form opinions, whether about transgender rights or climate change or the future of the rail network or whatever, other than from the most reliable sources of provable facts that you can find? Is there a better way?
I prefer to base my opinions on provable facts. It looks like most of the posters on FWR also like sticking to provable facts, and they also like sharing links to where they found those facts. The links are often to articles written by people who are clearly much smarter that me, and I have absolutely no problem with that - there are plenty of people in the world much smarter than me -
fortunately 
But yes, if somebody doesn't like that kind of fact-sharing and fact-checking, this mightn't be the ideal forum for them.