[zdunn]

I asked for it, and a lot of other ppl did too. These are great features and removing them would cause more than 1% of websites to lose some functionality.

But, importantly, they shouldn't lose their core functionality (if they're written well) because that's the "Progressive" part of PWA. If you don't use the feature or your browser doesn't support it, the website should still have basic functionality. One of the big ideas behind PWAs is "progressive enhancement", where you layer on features that may not be supported everywhere but add value when they are supported.

And a progressively built browser that doesn't implement every spec goes hand-in-hand with that. I think having more under-featured browsers like that would push webdevs into caring more about progressive enhancement.