I'm curious to hear from you if you use any. What am I missing out on, as a user? It's hard to justify the time spent to build PWA as an app if I don't even use them that way myself.
The only one I reliably used is my own. A port of the iOS calculator for the ipad (or any platform) https://getcalculator.app/
Mostly privacy. A PWA runs in a browser restricted environment. It can't access your contact list for example.
I use PWAs for banking and a few other things. They should be more popular but the public has been trained to think installed "app".
I use this for instrument tuning.
It's blazing fast and it works offline. It's a massive improvement over the standard docs.