Finding bugs maybe sure. Further up this thread someone commented about “images getting cut off” on Hypership. It’s feedback but it’s not valuable. Feedback from real users who are actually trying to execute tasks with your product is valuable
I would say I agree because validating your product with early adopters also can lead to false conclusions that it is useful - when in reality early adopters would just like to use it to see what it is and leave it for next shiny thing as something pops up.
For that matter, even waitlists are not fully reliable as many of them might drop interest by the time you launch, or suggest whimsical features that they won't use/pay-for later.
Hence the importance of industry knowledge and gut feeling.
