Mozilla spinning off control of its development to an independent group the way they did with Thunderbird would be the best thing that could happen to Firefox.

https://en.wikipedia.org/wiki/Mozilla_Thunderbird :

Operated by MZLA Technologies Corporation, a subsidiary of the Mozilla Foundation, Thunderbird is an independent, community-driven project that is managed and overseen by the Thunderbird Council, which is elected by the Thunderbird community.

Chrome self-destructing because of stupidity like AI would only ever manage to be a close second, at best.