Earlier quoted context omitted.
Honest answer :) Because I do not condone that move. It will be difficult because I have been using Firefox for years and tried to avoid anything Chrome-based and I am not very happy with Google's Manifest v3 approach, but Mozilla just crossed a red line for me.
Did it really cross a red line for you? I feel like Firefox is judged much more harshly than Chrome and it's unfair. Mozilla the company has made some terrible decisions that I strongly disagree with (update page featuring a movie ad, pocket integration, removing a search engine from the defaults, nerfing android addons for no reason) But compared to every other browser, I don't understand how people think it's even…
Mozilla claimed that their mission was to empower users. Some people are more upset by hypocrisy than the actual actions. If they want to change https://www.mozilla.org/en-US/ from "More power to you." to, say, "More power to us." then I'd personally be a lot less irritated at them.
(This isn't specifically a comment on the current subject, BTW; I've been increasingly irritated by Mozilla's hypocrisy for years now.)