I like using Chrome and even went back to it after trying FF and Brave 2-3 years ago. But this would really make me look for alternatives, even if those are inferior. It's not even about Youtube. I pay for Youtube Premium. But not being able to block third party cookies would be a deal breaker.
So switch then instead of just talking about it. It's not a big deal, it takes like 1 minute, and no one can seriously tell me you have a significantly different browser experience on Chrome vs FF.
It doesnt take 1 minute and yes the FF experience was significantly worse when I tried it.
Here's one example. I write almost daily in 4 languages on the web. With Chrome I get multilingual spell checking automatically in those 4 langguages without having to do anything. Even in the same .
With FF you have to manually install dictionaries and there was even a 23 year old issue (yes, 23 years) about using multiple dictionnries at the same time. This issue was only closed 2 months ago: