The web browsers that meets the PWA requirements are Chrome, Edge, Firefox (to a large extent), Brave, Vivaldi, all available on Windows, Linux, Mac, Android.
Not Safari. And all browsers including Chrome and Firefox are just Safari under the hood (on iOS) so no completion for Apple. Apple does not even allow a competing browser engine.
I wouldn't call this "PWA support".
When I talk to friends at Google that work at Chrome, and tell them to convince Apple to support many of the features, they tell me that they have given up on them, and I can go talk to Apple if I want. They told me they're gonna keep progressing the web even if Apple wants to stay behind, they won't stop.
I've talked to people at Apple about this, they don't care. They always have a far fetched excuse. I know it's not the engineers fault, they are ordered by the upper management.
Instead of giving the money to Apple, we could easily reinvest it to grow.