Firefox engineers are trying, and you cannot blame them (like you would blame Mozilla) because it has not seen the kind of commitment from industry talent that Chromium. There have been multiple re-writes of major components in Chromium, and they tried really hard to keep the codebase somewhat up-to-date. Firefox is comparatively dated, it's not at all sexy; had people understood this, they wouldn't be so quick with jumping to conclusions, & all. There are many objective, engineering reasons why Firefox is lagging behind the gigantic Chromium+V8 ecosystem of browsers and JS backend industry. For some champagne-socialist reason, it's really vogue to call for Firefox adoption, donating to Mozilla, etc. However, it's rarely an argument made on merit. I think, they just hate to admit that Google has largely succeeded in elevating Chromium to the likes of Linux. If you're making a browser in 2025, unless you're making an artistic point a-la privacy, or contra Chromium specifically, you would rather pick it up at upstream like you would pick up Linux, instead of re-inventing the kernel because Linux bad. That is not to say that OpenBSD, or whatever, Plan9—is without merit, just that it wouldn't surprise anybody had you picked Linux for the job. If you hate Google's SWE people, or its leadership that ostensibly could sway the course of Chromium development, then this is probably really painful! If you don't hate them, you just carry on about your business. And so everyone complies. Because why the hell wouldn't you? There's battles to fight, and there's the other kind.
It doesn't help that Mozilla is cutting the branch from underneath itself.
