Yeah, I don't buy that this site has any intrinsic bias other than than the normal marketshare differences that exist.
And if someone is a Sony fan, or Xbox fan, or PC fan....and you aren't.....why does that matter? Are your feelings somehow hurt because someone is enjoying a product that you aren't? I see very little in the way of "toxic" gaming hostility. Some heated discussion? Sure, but I don't see why that should be prohibited.
On REEE, if you said anything that would piss off any gaming community thread there (whether it be a Sony or Xbox focused topic), the mob would immediately mass-report you and you would get banned.
SlimySnake
can vouch on this. He's a Sony fan but got banned by SonyERA because he made some minor remarks criticizing Sony.