The platform owner decides, and they come up with a process that is necessarily fuzzy? Our entire system of justice is built on the concept of having to make judgement calls. Moderation is also requires humans to take a look and say, this seems to violate our policies.

Take a look at these: https://mobile.twitter.com/GriffinMalone6/status/13480046828...

Are these threats of imminent violence? I'm confident that a reasonable person would say yes.