Bingo. And so you hit the dilemma of trying to be an ethical company in an unethical environment. If Mozilla decreases their executive compensation, then they can't compete for the same executives that less-ethical companies who don't care about worker wages can. People complaining about Mozilla's executive compensation are asking for Mozilla to hobble themselves.
What ethics are we talking about here? Mozilla leadership carried out two large layoffs rounds whilst drastically increasing their own salaries. They already have unethical leaders.
For countless years they've been handed some 400-500 million(!) for "free", just by keeping Google the default search engine. For a conventional company, this kind of money requires a massive operation, customer base, etc.
Mozilla just gets a check. Half a billion for free. And then pisses away this money on projects where most are questionable, have no impact, etc. All the while the user base shrinking further and further, for over a decade now.
If that is the situation, it seems pretty reasonable to me to just get rid of leadership altogether. Let the tech people figure it out, it's not like they can do worse.
Have you looked at the chart in the link I provided? Mozilla was doing better and had more revenue with previous management who's compensation was a fraction of current management's.