> be on par with the one browser that is an order of magnitude more popular, then
So, once again:
- define "on par"
- explain why they need to slavishly copy that one browser without considering whether it's worth doing?
> Would an end user trying to use a web app as if it were native be satisfied?
No, because this is even more ambiguous than "on par".
Example: usb/bluetooth/etc. Native apps use them. Chrome put up some "standards" and rushed to implement them. Both Safari and Mozilla consider these harmful on many, many valid points.
Is this required for a "proper PWA support"? Do they just unquestioningly copy what Chrome does?
So, the more this conversation goes the more I'm convinced you neither know what "PWA support" actually means, nor what Safari actually supports.
> It... Literally does?
I looked it up on Can I Use. It was for desktop versions.
On iOS you can "Add to home screen", too (through the share menu which is now a kitchen sink for everything, not just share)