Wow. Ok, I guess BS12 can sometimes be a little unreasonable. I still enjoy it more than getting robusted in the face with a toolbox randomly.
Actually BS12 is quite reasonable. 98% of the perceived "problems" people have with the BS12 admins stem from playing there with a /tg/station or Goonstation mindset, which is gonna get you absolutely nowhere but the ban appeals section. The other 2% is the occasional off day or mistaken ban, what do you expect, they're human.
I've heard people on /tg/station complain that they got in trouble on BS12 because they were running around wearing a gas mask for no reason. That might seem silly, but we make our stance on realistic RP very clear. Goofing off every now and then is one thing, but if this was real life and you were working on a real spacestation, or any job really, why would you be running around with a gas mask for no reason?
As for antags, they're actually fairly free to do what they want as long as it furthers their goal or makes the round legitimately interesting (which antags are encouraged to do, even at the expense of their objectives. Do you want your green text, or an enjoyable round?). Killing someone because you need their ID is fine. Pleasuring your murderboner and masskilling for no reason will get you banned.