Following my previous request, i recently found out those users actually are part of accounts who shill probable scam mining website[1] while performing ban evasion[2]. So i wonder whether other involved users also use AI to perform spam and shilling.

doubletheprof - https://bitcointalk.org/index.php?action=profile;u=3594764
serchan - https://bitcointalk.org/index.php?action=profile;u=229993
KovaBTC - https://bitcointalk.org/index.php?action=profile;u=3686132

[1] https://bitcointalk.org/index.php?topic=5534176.0
[2] https://bitcointalk.org/index.php?topic=5094661.msg65137220#msg65137220