I think that if Mozilla is not interested in further developing Firefox, they should split off Firefox to its own entity.
Then the people who wants to work on/support Firefox can solely work on Firefox, and other people who wants to pursue whatever tech-of-the-day is (eg. crypto, VPN, AI) can push whatever agenda they want in their own org.
Instead of the current state where the other-agendas people are riding on Firefox's brand name recognition while starving Firefox into oblivion.