I share that dream and, yes, it's getting closer with modern Android. IMO Google has seemingly embraced this path (e.g. with ChromeOS "merging" with Android) I could see a future where docked desktop mode in Android is basically like what we have today with ChromeOS.
"An upcoming Android update will significantly upgrade the Linux Terminal app, enabling it to run full-fledged graphical Linux programs on supported devices"
https://www.androidauthority.com/run-desktop-linux-apps-on-a...
"An upcoming Android update will significantly upgrade the Linux Terminal app, enabling it to run full-fledged graphical Linux programs on supported devices"