It has become pretty clear that the Greater Internet Fuckwad Theory is not the whole story even if (arguably) some lower signal/noise venues would get fewer random offensive comments even if only because any level of identity verification will get in the way of casual drive-by shitposting.

But I don't really disagree with your basic point. There are nuanced topics I simply won't wade into online--which is probably fine as I probably don't have anything particular to add--as I may enrage someone who will make an issue of it within social/professional circles relevant to me.