Oh come on. "Power users" are both negligible in market share _and_ do not contribute to spreading the software around. Nobody in your family is going to use Firefox because you tell them "Look, I can customise my UI to arrange my windows in the form of a poop emoji when my custom sideloaded extension detects I'm on a Google owned website". "Power users" however are very good at yelling loudly when their never-used-by-anyone-except-them feature is removed, because they're such power users they opt out of usage tracking and never contribute to anything except maybe a bug report sometimes.
