What you provided here is not even worth of opening this thread, let alone tagging someone for something like this. As you aid it yourself, you have nothing against someone joining this forum for the sole purpose of making the money and he is probably doing exactly that.

So try a little bit harder, check the addresses he used (I suggest using https://ninjastic.space/ to check that) and if you find some connections than you can say that its "high likely a farm account", as you claimed. But even that is not worth of a tag unless he abused the rule somehow, either via merit shared, or joining same campaign with more alts.