1396
How about no?
(sh.itjust.works)
A place to discuss the news and latest developments on the open-source browser Firefox
It's not super difficult to just make a standards compliant website. I always wonder how in this day and age people manage to create professional websites with browser specific bugs.
There's likely zero bugs, but Firefox has more ways to block ads and trackers from affecting you, which is likely to real reason they don't want it being used.