Their discrimination against FF users has been fairly evident over the past year or so.
It's amazing how my identification abilities improve exponentially by using Chrome instead of Firefox.
Easy to hate on Recaptcha while reaping the rewards of participating in a community that deals with less automated spam because of it. :)
I just created a new account to check; not even so much as a Recaptcha url in the page source.
It's up to the site owner to determine how to handle those that don't meet v3's score, which can be a traditional CAPTCHA or hopefully something more effective and forgiving to humans: https://www.w3.org/TR/turingtest/
Personally I'm skeptical it will ever work correctly for me without tinkering, because I block third party requests (especially to Google) by default.