Who have no idea what they're talking about. I don't mean to include people that think a certain law should change; I'm talking about people who say the law is X, Y, or Z and that's that.
People on here are criticizing trademark law, or the law of trespassing, or stalking and a goodly number are either completely wrong or just opining without any regard to what the law actually is. Some will insist what the law is even when someone points to the actual law or case that says they're wrong.
What's the point of this? The law is something that exists; it may be good or bad, but like gravity it needs to be dealt with. You don't do yourself or anyone else any favors by misquoting what it is. And it's complicated, at least in part, because life is complicated and the law consists of a lot of fine gradations between what can and can't be done.