If telemetry is the problem, the rational thing to do is to use a fork/build of Firefox without the telemetry, not support the Google monopoly or go for browsers that have had potentially problematic privacy policies for a lot longer than Firefox.

Switching from Firefox to Chromium because of the latest Mozilla policy changes is insane. Google is ten times worse in every relevant aspect.

Depends on where you stand on misogyny and transphobia.