PWAs failed in the marketplace and are essentially dead. Google pushed them because they were already on track for web dominance, and the shift toward native apps was a threat to that. These days Google still wants to control the web (and more or less does), but they also have a healthy app ecosystem, albeit only for Android.

I'm sure it still bugs them to no end that they have zero control over the app experience on iOS, which they possibly could have had more input on had webapps ended up being the dominant way of doing things on mobile.