It's not my work to search and show evidences
If you don't have 'evidences' then don't make wildly incorrect assumptions based on incorrect hunches. It serves no purpose unless you have evidence. Would it be fair for me to accuse you of being a scammer or farming accounts with poor posts without evidence? Of course not.
about 2) The account "Quickseller" made only decent posts, that right. But that doesn't mean the person behind Quickseller post in the same way from other accounts.
Well he did with the ones I was aware of (both ones he told me about ones he didn't). I don't think he's going to risk having his main account and all his others banned.