Oh, you could change my mind. Bring forth sound arguments. Not wishful thinking. Games with bad things in it that might be a bad influence have been around for a long time. So I expect hard data backing up those sound arguments.
The possibility of bad influence is recognised by the fact that those games are adults only. And those adults can and unfortunately do those bad things all by themselves without ever playing a video game.
Of course it is ok to share opinions. But what those activists did was a bit more than that and with a bit of lying and harassment. And I am not ok with either of that. No matter their noble intentions. It especially infuriates me, when people do bad things because they act righteous.