Well, if anything then the evidence is that, at least in the case of EUV, content creators have been quite good at relaying their concerns to the community and providing constructive feedback. But that wasn't really the point of my post.
Meanwhile, the broader community could create a lot of noise and false positives (as in- "this is great no matter of what others says, they're haters and complainers"). Look at the OP's example- they literally are willing to pay more than a full release price for an unfinished game. And this is the sort of attitude that, as I said, causes more harm than good. Because games where only a handful of die-hard, blinded players enjoy a game despite its major flaws, get terrible first impression, have low sales, and die (or in the best scenario receive limited maintenance).
So the TLDR of my first post is- be a fan, not a fanboy.