It's not very hard to imagine? Most people don't expect that level of control anymore; their desktop just updates with whatever corporate slopware is pushed out seasonally. Websites come-and-go. It's not a hugely motivating rally-cry for average person.
> We need to kill Android. And from the ashes, make a new platform that works for us, and not for a corporation's profits and anti-competition.
Android is the best-working part of that equation. Microsoft supported Android apps on Windows Phone. Jolla supports Android apps on Sailfish OS. Linux supports Android apps in Waydroid. You don't have to "kill" Android as a runtime or smartphone OS; just force Google to compete with 3rd party ROMs.