This is like claiming nobody wants to write C because no one wants to manage their own memory in 2019, or miss out on all the cool new packages in the JS ecosystem.
Evidently _some people_ do. I can assure you there's at least number _n > 1_ of people who care more about app size than either of your points.
I personally wrote a side project in system web-view, because I don't want my macOS-only system-tray application to weigh 115+MB to make sure I have APIs I don't need in platforms I don't support.