Comment by DangerousPie

Or in slightly less fatalistic words: In any entity with more than 1-2 employees you need someone to make decisions and be accountable for them. The normal solution is to have a director/CEO for this. You may be able to get away with paying them slightly less than market rates if they are doing it for a good cause, but if you want someone competent you will need to pay them a relatively high salary to compete with other employers.

Expecting Mozilla to somehow function without a CEO, unlike pretty much every other charity in the world, is just not reasonable.