I see your point and it is absolutely within your right to stay on Chrome if you don't want to change. I've found it pretty much identical in terms of functionality and UX for the past decade though. Do you have any particular functional improvements in mind that you're missing in Firefox?
I think that personally I'm a lost cause. Either give me Firefox in a Chrome's pelt or I stay with Chrome. And maybe that's good this way: Firefox should just focus on new users and make the best browser for "them".