https://en.wikipedia.org/wiki/Technology_adoption_life_cycle
With todays major browsers landscape the differences are much more subtle. From a developer productivity perspectice I don't think it matters that much anymore, none is really a 10x or even a 3x browser over the others.
So I don't see a huge developer exodus happing for Chrome as long as they don't completely cripple their web dev experience.
Either use Firefox on Android or give up. For desktop, you have at least Firefox, Otter Browser, and Epiphany as options.
Now as a reply to this specific comment, I've tried Firefox multiple times on Android and always hated it. So I obviously can't advocate people use something I hate. But I do wish there were more...options.
I really try to support everything that exists, especially non-Chrome.
And yet, I am not excited to download Otter Browser. Its website and SourceForge (i.e. the very fact they're using Sourceforge) do not inspire confidence that they're not modern and up-to-date enough to actually be safe to even use (browser attack surface is massive). Am I wrong in translating this first impression to a judgement on safety?
It feels like they are just force-feeding the 'UX features' of Chrome and ignoring all the feedback from the tech community.
Things like truncating url sub-domains and hiding the url address bar with dynamictoolbar are not necessarily wrong features. However, to me they should always be opt-in, they should never be fixed defaults as what we have now in the latest upgrade of Firefox for Android.
Firefox used to be about freedom and customization. If I want to break it by messing with about:config then I should be able. If I want to break it with a non-compatible add-on then I should be able to. This whole UX mindset of padding the room and "we know better than you what you should want" feels very dismaying especially for a project that exists because of community contributions.
Google knows that with their high usage numbers (partly thanks to Android and Firefox's mistakes in the 2000s to mid 2010's, they can do pretty much anything and will still keep their Chrome browser popularity. This is thanks to Android and the general population across the world who don't care enough about their privacy. Plus, if someone uninstalls Chrome where will they go? To Brave (Chromium), Opera(Chromium), Edge(Chromium), Vivaldi(Chromium), or Firefox.