Right, it's the standard "racism is privilege+power" argument? 1984 is (this particular toolkit for controlling how people behave)+power? Am I understanding that correctly?
Because if I am, I'd say that you're building tools for your enemy to use. There's no reason the alt-right can't use the same tactics on LGBT teens as you'd want to use on alt-right nutjobs. There's no inherent reason why these tools can only be used on the guilty. That's why fairness in discourse is important (to me at least). Think of it as a social Geneva convention. Once you start thinking "the ends justify the means" and using saran gas you're giving the hated enemy permission to do the same.
Take a look at the playbook of the trump subreddit before they got banned as an example.. They learned most of those plays they used to dominate the front page and silence outsiders from leftists, often even using automated moderation tools that were initially created explicitly for leftist subreddits.
"We don't do that here", if it becomes a normalized part of the discourse, will be used by the hated enemy once they're powerful enough to do so effectively.
Enlightenment and free speech are the Geneva convention of discourse. I really don't think it's in anybody's best interest to erode those protection, but I suppose time will tell. Still, it feels like the left is building the social infrastructure for fascism that the right will inevitably figure out how to co-opt...