Well, I think the bold is true. But about half of the threads and replies are people hating on Nintendo. It is true that people talk about Nintendo more, but it could be positive or negative.
You are right that there are always people who hate Nintendo in some of the Nintendo threads but most of the time it's only 1 or 2 posts that are about hating Nintendo and they usually get 20-30 replies. So it's not like half of the thread is about people hating on Nintendo it's more like half of the thread is the Nintendo community bashing together the 1-2 Nintendo hate posts.
And there are always people who hate in one community, there are also people who do the same thing in Playstation threads. But I guess since you mostly play on Nintendo you will not realize that and only perceive the Nintendo hate posts.
True. Whatever we do, we can't erase the Playstation/Nintendo-bias of this community anyways. Barely any Xbox, PC-gamers or Retro-gamers (besides Nintendo/Playstation retro), basically non-existant mobile or MMO-gamers. This diversity we don't get in any case.
True words but it should also be noted that the Nintendo bias is way bigger than the Playstation bias on this site.