If the telemetry-based removal of a feature would turn out to be a dealbreaker for a critical mass of users, it should be reconsidered (think of Mozilla's posit

If the telemetry-based removal of a feature would turn out to be a dealbreaker for a critical mass of users, it should be reconsidered (think of Mozilla's position in the browser market nowadays: it can't afford to piss off the "power users" and evangelists of Firefox). And it's not like Firefox has no Nightly or Beta branch to test the waters before making a significant change. For example, during the prerelease phase of the so-called Proton UI, there was no shortage of clear feedback about it. A lot of it was legitimate criticism about accessibility (harder to distinguish inactive horizontal tabs because the separators were removed; part of the new palette did not have enough contrast; etc.) and usability (e.g. in cases of low screen estate, some menus were suddenly so huge that they'd not fit within the height of the screen). Mozilla is slowly fixing some of these issues, which is a good sign IMO, but also sticking to some other "deliberate design decisions" that still remain controversial. I largely do not believe in design-by-committee, by the way. However, I believe that all valid feedback should be evaluated and taken into consideration if it's critical.