It helps to compare Firefox with Waterfox, a firefox clone. Waterfox is maintained, or used to be maintained, by a single person, as a hobby. Firefox is powered by a 500 million corporation with a huge number of pricy executives.
Which requires a lot of money. Which Firefox tries to earn by adding all sorts of questionable features that undermine their users' privacy.
To save Firefox, it is high time to go back to the basics and start thinking why we need it: to provide an alternative to commercial browers? Or to finance a huge bureaucracy?