The section of people that use it might benefit to a very large degree. Or they can make the switch prominent to push adoption. There are a lot of features implemented and hidden behind “about:config” where you could ask the same question. Many of them are for the security and privacy conscious but come with a few strings attached, for example some advanced cookie settings such as third party isolation.
That said: I fully expect that at some point Mozilla will want to push adoption of this feature, but not in its most extreme form. I’d expect that a default configuration would use soft fallback.
That said: I fully expect that at some point Mozilla will want to push adoption of this feature, but not in its most extreme form. I’d expect that a default configuration would use soft fallback.