Whether we like it or not, the distinction between an app and a web page has already eroded, and is, and only will be, eroding more.

Even for local apps it's starting to become common to ship the app in an interpreted language where the interpreter is a browser instead of say python & qt.

They're converging towards the middle, which is good, but it's not going to be the same thing. Apps use web tech for convenience and native APIs for things you can't do in web. You're expected to trust apps and extensions more than websites.