Rey Finn Rebel Trooper is a fun deck. But just that a fun deck. It will win, but just not consistently.

I read nothing before my own post.

I'm just here to answer the OP.

Yes.
He sucks. He sucks very bad, and he will only get worse as his design space will slowly become less and less useful. Every quality red Neutral or Hero card makes him that much worse. Unless there is ever some magical necessary reason to include his over costed self to include Red Villain weapons / vehicles in a mono Yellow, or a Blue / Yellow deck. However again, with the increasing number of Yellow and Blue weapons and vehicles, Finn becomes worth less and less.

He is a bad card.
He is also over costed. (Compare him to FN-2199... yeah.)