We need to balance "holding them accountable" and "being realistic". Mozilla cannot compete against Google without funding from somewhere. As far as I know, this is a fact. So the question, to me, becomes "what kind of funding is acceptable?"
And I suspect this is where we completely differ - because while Mozilla has made some mistakes, I am not nearly as enraged as some of the other commenters I've seen have been.
I think Mozilla has been doing a great job, with a few notable hiccups.
So it is naive to hold a Non-Profit to their foundational mission statement and goal? Their Manfeisto?
Mozilla is not, or rather used to not be, just a For-Profit Software firm making a browser. They were a Non-Profit Foundation started to advance ideological and philosophical ideas, namely Open Web Standards and Access for all.
It seems like you are perfectly find with Losing the Mozilla Foundation, and replacing it with Mozilla Corporation the software developers that make a commercial browser.
Maybe FireFox 60 should just go closed source and charge $40 a download