I think one of the main reasons anyone uses Firefox nowadays is because they believe in the mission and find good values alignment with a player that has more independence than Google.
With a constant string of red flags and negative press, I wonder what the next version of Mozilla will look like. Personally, I wouldn't bet on them surviving and thriving for much longer.
I feel a core part of the Firefox-using crowd vouch for it because they believe in the Mozilla mission from years back, and feel a strong value alignment with the company. I don't think they've got enough goodwill built up to ride things out forever.