The real question is not are Thule, cryptohunter, and The One Above All alt accounts, but who is the person behind all of them? These 3 accounts are just 1 coward hiding behind 3 accounts trying to stir up drama. The coward trying to destroy the trust system in order to get his credibility back. I have my thoughts on who this coward may be but with 0 proof I will not say.
Thule is likely a different person.
CH though is an old account and has been posting walls of text for years, just didn't wander into Meta until recently. I think he might be genuinely such an agitated person and not someone's troll-tool.