Twitter is stopping viewing, which isn't a fraud / abuse issue at low rates.
In the case of posting, rate limiting / scoring w/o a phone number without explicitly banning until you build more reputation works pretty well from what I can see, and most legit twitter users, especially new ones, don't post a lot and mostly read anyway.
And in twitter's case, I think paying a small amount of crypto would actually be something the CEO is interested in this case for the private types who won't / can't get a phone number. Some of twitter best accounts are anonymous and the CEO is into crypto. Add a monero payment option for those small amounts who aren't fraudulent and are private people and you will probably get rid of a lot of complaints.
In the case of posting, rate limiting / scoring w/o a phone number without explicitly banning until you build more reputation works pretty well from what I can see, and most legit twitter users, especially new ones, don't post a lot and mostly read anyway.
And in twitter's case, I think paying a small amount of crypto would actually be something the CEO is interested in this case for the private types who won't / can't get a phone number. Some of twitter best accounts are anonymous and the CEO is into crypto. Add a monero payment option for those small amounts who aren't fraudulent and are private people and you will probably get rid of a lot of complaints.