I don't use the fork (I'm still learning what that even means). I mostly use PWAs on my desktop and my understanding is that regular FF doesn't have native support for PWAs so you have to use an extension plus a couple other things to make it work.
It seems fine on android though, but the "app" really just opens the URL in the browser, it's not like how Chrome was. NBD though.
I know! I hadn't even thought of that until I saw someone's was like "mee" and now I need to get another account. It's like how people get caught off guard when I tell them my 20 year old email is just my name with no numbers or special characters.