I have seen no effective solution for this, in any product yet to date, that both addresses my questions and satisfies the terms of "users do not exist" demande

I have seen no effective solution for this, in any product yet to date, that both addresses my questions and satisfies the terms of "users do not exist" demanded by those who are against all telemetry or telemetry-capable functions. Either products make decisions without telemetry, or they make decisions with telemetry. Either products make decisions without user input, or they make decisions with user input. You do not name any specific feedback methods that do work as a solution to this, and certainly I see none in use in projects such as Homebrew or Audacity that are cited as acceptable to you. What "quality software companies" offer a feedback method that does not stir outrage among those who incorporate it into their products and/or efforts, when their feedback is not treated with priority and urgency? Every software company I've seen, small or large, has angry users who complain that their opinion has not been treated as correct by software companies, and those users congregate on forums and reiterate their pet peeves every day or week or month, in the futile hopes that this clamor will somehow influence the software company (which, generally, it does not). You do not address at all my concern about biased-towards-complaints data resulting from in-product surveys or feedback methods, and you do not explain how feedback methods unsupported by telemetry can measure the true amplitude of complaints rather than being biased by how loudly the squeaky wheels squeak. You have failed to provide any supporting evidence for your argument that these are 'solved problems', and instead framed your unsubstantiated view as if it's fact. That isn't a viable approach at Hacker News, and I hope you'll take the time to correct it.