To be fair, a lot of things can change in three weeks. I am sure three weeks before Byleth was revealed, many would have said that FP5 is "guaranteed to be a third party character." Things change. Also, "pushing the idea" is probably better phrased as "speculating." I don't believe everything
Fatmanonice
says, but I acknowledge that he is speculating. The man has been saying this for weeks/months now.
Not trying to defend him. He can do that on his own. But his message was just a request from the Meme folks. No need to target someone like that.