Comment by bastawhiz
99% of consumers don't care about web standards, they just care that their site works. Nobody is paying for the minimum viable browser. It's not going to get anyone up in the morning.
What gets people excited are quality of life improvements, like video chat picture in picture, or new ways of grouping and managing tabs (your reminder that Mozilla killed Tab Candy). Firefox only got a cookie cutter clone of Chrome tab groups on v137.
There is no shortage of ways browser vendors can ship features that make browsing the web better without getting in anyone's way. Hell, they could have a build of Firefox that just has all the new stuff and merge it back to trunk when it's been proven out.
The thing is, for people like my mom, every other browser has features she uses and likes. Firefox hardly does more in the core experience than it did fifteen years ago when they started shipping every six weeks. My mom has every single department store's app installed on her phone, she's not choosing a browser based on how much it may respect your privacy.