As part of the devs farewell message on their site, they have included malicious code to make each visitor sends 2,000 requests to the dbzer0 servers in an attempt to DDOS and take the instance offline.
We have proof the guy tried to secretly censor the entire fediverse to promote a conservative agenda. We have proof they committed cyber crimes. There is a pattern of dishonest behaviour.
We don't have ANY evidence of the death threats or doxxing beyond the claims of a man proven to be dishonest. You don't have any, and try to hide the fact you don't have any with a weak "you wouldn't believe it". The same way I tell my friends "you wouldn't know her, she goes to a different school."
Right now, the two possibilities are that literally everyone except you has been tricked, or you have been misled by a desperate, proven liar. Take a second to consider the possibility that, maybe, you're wrong to trust them.