Keep in mind that (a) if the fact that you have to roll back updates is not obvious to people here, I'm not sure how a normal user is supposed to find it "easy", and (b) if you have to roll it back too, you'd lose your data in that app, so it's neither as consequence-free as disabling, nor as thorough as deleting (freeing all the space etc.).

Simply hitting "disable" warns you that it will uninstall updates & delete user data.

It's literally a single button press to get back 100% of the space possible, and it's the button called "disable" right in front at the top of the app's info section.

It's infuriatingly confusing and it's not clear that you will get back 100% of the space. If they are sincere about this, why cannot you simply fucking uninstall the damn application ? No stub, no nothing. Just a normal app like the others, that you can install or not.

Because it's on the system partition which is fixed size and read-only. That's how factory reset works, by nuking the data partition.

They probably should just lie and rename the button to uninstall. That's basically what it is.