I think "trolls" are absolutely necessary and wouldn't support banning any of them. I see I got downvoted (probably by someone who identifies themselves with the current propaganda cycle) but I'm pretty sure I'm correct in thinking that companies supposedly offering salvation from the trolls are really doing it to open the doors for much broader censorship. It's a typical playbook, invent a fictitious enemy and then offer censorship tools to be accepted by general public. Once that happens, the criteria slowly and quietly converts into something much more sinister. Communists have been doing it for decades.