Right, but approximately zero people have ever said "this website doesn't work on Firefox, so I won't use this website". They say "this website doesn't work on Firefox, so I won't use Firefox".
It's the perverse incentives where companies with a captive audience that can't easily churn will be the ones that ship broken half-arsed sites and not care.
One phenomena I am seeing more that makes me boil with fury is infinite captchas in Firefox. If Firefox increasingly gets excluded "for security" then...
I can't figure out if this is true. I certainly get constant captchas, but everybody else I know who uses firefox is also ad-blocking, dropping cookies, resisting fingerprinting, forging referers, downloading embedded videos, etc. etc... A lot of us look like anonymous bot traffic because we are trying to look like anonymous bot traffic. I don't know what the solution would be.
This is driven by enhanced tracking prevention. If you turn that off for the respective site, then it goes away.
Pretty sure I try disabling protections in such situations but maybe not. I returned to the last site that did it to me to try this out (on a different machine) and it didn't captcha me at all with protections on! Ugh.
I welcome the Safari walled garden because if Apple have to allow chrome on ios, that's the end of any cross browser testing (and the end of Firefox)