I already want an add-on that allows me to disable certain CSS features just like I block JS by default. It's becoming a problem for sure.
You’ve pretty much always been able to do this via user style sheets [1], which override author (the author of the website you’re viewing) stylesheets.
[1]: https://developer.mozilla.org/en-US/docs/Web/CSS/Cascade#use...
Recently they added ":modal" that will make paywalls harder to bypass. Most sites haven't implement yet, but I've already disabled this "feature" on config.
The downside of cherry picking features is that your browser fingerprint becames pretty much unique.