Of course, Apple is sabotaging Chrome and has been for years, and that's a much bigger problem than PWAs. The Safari team shouldn't need to implement PWAs against their will, Apple should instead let Google bring out a browser that does PWAs and then let the users decide if they want to use PWAs or not.
Google does something quite similar, though; Chrome can install applications into Android's app drawer, but that requires privileges other browsers can't attain, needing to resort to things like widgets instead. Firefox doesn't care about PWAs and Apple doesn't care about any platform but their own, so it's not as obvious a problem, but Android is full of "you must be the manufacturer or Google to compete" permissions. Android is just a lot better at fair competition than iOS, to the point you'd barely notice.
Google does something quite similar, though; Chrome can install applications into Android's app drawer, but that requires privileges other browsers can't attain, needing to resort to things like widgets instead. Firefox doesn't care about PWAs and Apple doesn't care about any platform but their own, so it's not as obvious a problem, but Android is full of "you must be the manufacturer or Google to compete" permissions. Android is just a lot better at fair competition than iOS, to the point you'd barely notice.