Bryan has talked about how he supported it when Joyent dropped 8chan and, if my memory serves me right, that he wished they'd done it sooner. In the same conference talk he muses on the responsibility of platform owners/providers.
Yes, it was actually Gab -- and I talked about it in a talk on ethics on software engineering.[1] As you indicate, that talk captures my feelings on the matter, so I'll let it speak for itself...
Ah, yes. I must've skimmed an article a little too quickly. Thanks for the great talk, that certainly made me reconsider some things when I first watched it.