They certainly don’t have a lot of love for them as a first-class app development environment, but they are also their fig leaf of “open access” to the platform.
Regardless of that, I do like the idea of PWAs getting access to a higher tier of web APIs, especially those increasing the attack surface, as “installing an app” makes even non-sophisticated users do more of a double take than “visiting a website” in terms of access to their system.