Usable PWAs on macOS is great news. At the same time, I can’t help think Apple’s sudden interest in making web apps more useful has to do with visionOS.
When iOS was brand new, they were talking up web apps because they needed the content. When the platform got established, Apple could tighten the screws and drive developers towards native apps by not supporting the latest web features.
Now that they have an upstart platform again, they’re once more interested in PWAs, WebXR and so forth — until the day comes that visionOS is established enough.
Of course this was always Microsoft’s playbook too, as we saw most egregiously with Internet Explorer 6 not receiving any updates after MS concluded they had won.