Many people believe that installing web apps on their Android phones gives them privacy benefits from the cross-site tracking perspective. Chrome is working to bring some of the covert tracking features available to native apps to installed web apps on Android. https://twitter.com/intenttoship/status/1201944625822474240

Periodic Background Sync will allow a website that you've installed to keep tracking your location in the background indefinitely.

If you installed a social network app from a surveillance company, it will help them collect your IP addresses over time to make sure they can know about the traffic from your other devices (e.g. laptop, smart home devices, etc.)

The API requires obtaining a permission which Chrome grants to installed apps silently without user consent (imagine if it were to put up a dialog asking the user "Would you like to allow this app track your location in the background and access your device behind your back?")

The intent thread cites a lot of positive developer feedback. Positive signals from Edge. Mozilla finds this API harmful. No signals from Safari.

I wonder what users would have thought, if they had a say in this process.