Let me paint a hypothetical.
[...]
Since I'm a startup, I have a small moderation team
and no fancy AI moderation so most of it slips through
the cracks. Is my social network "built to enable
terrorism"?
Not hypothetical to me!
I once ran an for-profit online community. It was a startup, with strictly volunteer moderators. It was an early "social networking" thing; honestly more like "a BBS with some primordial social features". But hey, sounds like your hypothetical to an extent.
This doesn't mean I know anything.
Just means I'm sympathetic to the plight of folks trying to make that sort of thing a reality. For the record, I'd sure like to give it another try at some point myself.
Anyway, intent matters here, to an extent. Parler advertised itself as a more or less moderation-free space.
That's quite different thing from Twitter and FB, with their codes of conduct and actual moderation teams. I mean, the line may be fuzzy, but it's there. I'll be the first person to say that Twitter and FB suck, and moderation efforts for advertising-driven user content mills are probably eternally doomed because their very business model dictates that their user-to-moderator ratio is always going to be laughably huge; far too large to enable effective moderation barring some kind of generational leap in AI moderation tools.
But there is at least the semblance of a good-faith effort there from those two, as much as I dislike them.