Idk I switched to Firefox earlier this year and it's honestly been really painless. Not sure why a CAPTCHA would trigger based on browser ID when those are so easily spoofed. Why would someone be running a bot on a less popular browser? I have not noticed any change.
The one thing I do notice is that on some very poorly built websites there will be a bug and it's because they haven't checked in Firefox or because I am blocking things that are no longer blockable on Chrome, but this is rare.
For me it's those horrible cloudflare and recaptcha things. I get them soooo much. And also that stupid cloudflare "We're checking if you're human" page.
I am on Linux though. Perhaps Firefox on Windows or Mac fares better. But these problems are from the last year or two and don't happen in chromium also on Linux.
The one thing I do notice is that on some very poorly built websites there will be a bug and it's because they haven't checked in Firefox or because I am blocking things that are no longer blockable on Chrome, but this is rare.