I'm talking about the potential for real life harassment (folks calling my employer, showing up at my house, swatting, etc) if I were to say something controversial. I am specifically concerned with being doxxed and criminal harassment.

There's a vast world of difference between people making comments in poor taste over a game and the level people sometimes go to if they engage in an argument and lose in an embarrassing way. I would not recommend that anyone freely engage in internet debates in a non-anonymous fashion.