Websites already can barely be assed to care about supporting Firefox users, doing adblocking by default is a great way to get websites to start putting up banners that say "our website does not work with your browser, please switch to Chrome" en-masse.
And Mozilla did develop anti-fingerprinting tech, but they can't enable it by default because it breaks lots of websites and when a website doesn't work they're not going to appreciate Mozilla for protecting them, they're going to be pissed that it doesn't work.
> start putting up banners that say "our website does not work with your browser, please switch to Chrome"
That's how IE 6 was killed.
Websites blocking Firefox because of ad blocking has happened before:
https://web.archive.org/web/20070817224229/http://whyfirefox...
> banners that say "our website does not work with your browser, please switch to Chrome"
Which in practice means "switch to using a Firefox extension which fakes looking like Chrome, and just to selected shitty sites like ours".
With a normal Firefox on desktop on Linux, I get unsolvable recaptchas all the time, especially on cloudflare pages.
Ironically, if I fake instead a chromium to be on Windows (UA and Sec-CH headers), I am allowed most of the time even though my TCP fingerprint must mismatch then.
It's annoying to see what the normal web has become. Can't even read news anymore.
Ironically, all these bot defenses make it easier for bots to scrape their website, but make it harder for actual users to use them.
The only bot defense web app firewall that still works with Firefox seems to be Anubis. Pretty much all others autoflag Linux users as bot users, which feels insane if you think about less web developers must know about how botnets work.
The level of mental gymnastics in this thread denying the extent to which companies like Google (and their puppets like Mozilla) control the internet is too damn high.
Fortunately if projects like Ladybird gain enough momentum, websites might be forced to cater to it. Time will tell.
Brave has native ad-block and anti finger-printing, enabled by default, and the web works excellently as in I don't know of a single site that doesn't work with it.