Ask HN: Is structured community validation a real alternative to cold outreach?

A founder posts about their idea, gets a few "looks cool" comments, and walks away with nothing useful. I keep seeing this happen.

Community posts disappear fast. Launch platforms want a finished product. Cold outreach is slow.

I'm testing whether a structured project page (problem, solution, early evidence) lets potential users make a real yes/no call in 30 seconds without signing up. And whether indie founders will give structured feedback to each other out of reciprocity.

Maybe users need to try something before they know if they want it. Maybe founders won't bother with a form and just drop a link anyway.

Has anyone tried collecting structured feedback from communities in a repeatable way? What broke?