Mozilla is more of a progressive activist organization and fat paycheck for Mitchell Baker than it is a software development organization these days. Do not expect Mozilla to prioritize maintaining Firefox or helping its user base get off Google.
I have only ever recognized blog posts about interpersonal matters by them which are rather cringy and don't add anything to the preexisting matter. All about first world problems.
Do you happen to know what concrete and half effective activism they actually do?
My main criticism is that they "milk the cow dry" by extracting so much money from the browser (which is their single largest source of income) that it starves.
I think Mitchell Baker would rather chair something like the SPLC than an organization merely devoted to the development and maintenance of open source software, and that's what she's turning Mozilla into.