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Yes, send it via private message. It’s a shame, though, that this way we lose the discussion, which would surely have brought many amusing comments, but otherwise, it’s impossible to achieve objective results.

He needs to agree with you or not?) I’ll send something now, and they won’t even guess it’s from me.

No, that’s not necessary. As I said, it depends on the motivation. If your goal is to ensure that no one in real life can guess who you are, then you can send anything.