I've mostly stopped giving feedback on my experience as a user of various apps for the reasons you listed. I have experience working with directly with clients to build web applications and typically use that experience to tell devs what average people are likely to think about certain UX, bugs, etc (because I used to make money doing that).

The problem for me has been that my feedback is usually taken personally and it gets fucking exhausting. I just don't care to do it anymore. My experience professionally had the benefit of economic incentives. Companies lost money from UX that didn't work. I figured out what the customers didn't like and fixed it. There was an economic feedback mechanism. Here, it's just "what have YOU done?" or some variation of being told to basically fuck off. It honestly feels like you don't matter unless you're specifically writing code on something (I have, just not for Nostr yet). The messaging has been super elitist in my experience. And I'm not getting paid (I actually send sats to devs), so it's pretty easy to fuck off.

/rant