I've been using Firefox since its inception, and was a Netscape user before that. I _briefly_ tried Chrome, but swiftly returned to Firefox.
Half my extensions are still broken on Firefox Android. I've been using Firefox desktop on my PinePhone off-and-on and not only do all of my extensions work, but it's snappy and has a superior UX. I can actually access and manage my bookmarks with a sane interface.
And yet even desktop is sullied. Each major version tries to hide my bookmarks, or something equally egregious, and Mozilla frequently abuses my trust by promoting products and services through privileged channels.
Same boat. I've used Firefox in spite of countless boneheaded decisions by Mozilla leadership, because underneath all that mismanagement, the product was solid. They started trying to mimic Chrome rather than be their own browser, and it was all over. The final straw for me was with their recent divisive political statement in opposition to free speech.
I too have recently departed the Firefox evangelism train after a great many years promoting the browser to all of my friends and family. The org has become far too disdainful of users. The constant UI/UX regressions are awful for people who just want their browser to work (ie. the vast majority of users), and management are more interested in political posturing than browser development.
Thank you for the support!