I have had several sites refuse to work properly (American Airlines maybe? It was some airline) with every single add-in disabled and with every security feature I could find disabled.

I am with you that it's super rare, I have only had to open chrome due to it being that bad a few times, usually I just need to disable javascript blocking or enable more cookies. But there are legitimately sites that are just so badly written that they won't take your money if you use Firefox.

I guess Google meet has frozen video for me on Firefox, but I expect Google to intentionally break their website for people not using Chrome after the "DRM Website" thing struck them as a great idea. Using Google products at this point is just asking for more lockin when we should really all know better. At least Zoom is a different company from Google...

But overblown for sure, if I disable javascript blocking and cookie autodelete and temporary containers that keep the site from realizing I already logged in -- pretty reasonable issues -- 99.99% of the issues I have vanish.