I also noticed from Cantsay post history that sometime ago he was an active spam buster. He had a reputation of busting bounty cheaters, alts and even users who broke forum rules by copy posting AI contents and even plagiarists.
From the fact that he was able to bust spams I don't think he would be dumb to have made dumb mistakes like airdropping merits from his alts if he had one.
I agree with you, and this is what I have been thinking about since the first days of this topic.
@Cantsay is good at finding alternative accounts. Does this mean he won't be able to hide his second account well enough? I am ready to agree that he has an alternative account, since according to the history of posts, the formation of life on the forum occurs too quickly, but the ownership of alts is not prohibited. And these are not the accounts the OP is referring to.
In addition, the @Turn it off account belongs to a person from Indonesia, although you can also understand that he knows what he is writing about and is not a newbie.
https://bitcointalk.org/index.php?topic=5448217.msg62474906#msg62474906