You have to be careful there, too, though: Amazon is claiming that Parler (to use the most currently relevant example) did violate their terms of service, because their terms of service are so vague and broad that they can be used to apply to almost anything.
I haven't used Parler, but from what I read there were loads of people actively calling for violence. Sure, there's no set line, but Amazon shouldn't have to support that if they don't want to.
You have to be careful there, too, though: Amazon is claiming that Parler (to use the most currently relevant example) did violate their terms of service, because their terms of service are so vague and broad that they can be used to apply to almost anything.