The problem as I see it is that Mozilla is fundamentally two companies, one relatively small that makes almost all the money (thanks to google) the other rather large that makes basically nothing
Paradoxically, the small cash flush company is a nonprofit, while the larger bankrupt one is for profit.
Worse, the larger for profit company is simultaneously attempting to he a research institute, an advocacy group and a service.
I see no problem with the ceo making a "big" paycheck given the industry and location, but I do have major reservations about the seemingly directionless steering that they and their board have done.
This is not a critique of the individual research project, some of them being great, but just because Google gives you a big wad of cash does not mean you can spend it without a plan, or that you can do "everything"