I've definitely had my "let's switch browsers and see if this works in IE/Edge/etc." moments, but in general, things not working with Firefox with tracking protection enabled is rare.

And more importantly, when I need to bypass these safeties by using another browser, I'm doing so intentionally: I know this site is trying to move outside my security comforts, and can address it accordingly, rather than any given website abusing my privacy.

And of course, if I switch browsers just for sites that don't work in my Firefox setup, they're loading in a browser I use for little else... so they don't find much anyways.