It’s not just HTML5 notifications. If a true PWA would be able to access sensors such as battery, location, network, alarms, etc.
There’s no reason why a laptop/tablet, PC or Mac should be treated differently from a mobile device. With many now coming with SIM/eSIM capabilities and pretty much the same sensors as a mobile, we should be able to interact with them in just the same way.
I confirm it’s not a real PWA in terms of installability (I mean with a service worker behind the scene).
It’d be great to have it as a PWA, it would allow us to get regular notifications on any desktop computer.
I believe it’d also ease the app update.