I don't think the ideas behind collective unconscious and archetypes are wrong.
I mean, any personality psychology will point to the fact that most people fall under some kind of basic type, and isn't he also a personality psychologist? Evidence for the collective unconscious exists too.
Empirical science is great, but that doesn't mean anything that is not strictly verified or falsifiable cannot be true.
You may not think they are wrong, but there is no way to know either way. That is why they are unscientific. There is no "evidence" for the collective unconscious. And no factor analysis of personality has ever yielded Jungian archetypes.
What would constitute evidence in your opinion? Actually, I'd be interested in hearing what you think a collective unconscious actually means ---
let's positive thinking [tell me about a complicated man]