I think the Chromebooks Android support is more like the virtual devices that Android studio creates then actual native installs.

It's been quiet long since I've last I checked it out, but at least at that time the locale was different inside the android apps vs chromeos (including keyboard layout etc) and there was a separate settings app like on any Android devices with dummy values in hardware etc.

It was funny because it let me install Firefox on the Chromebook but it felt more like gimmick then an actually useful feature as a lot of apps just outright didn't work