For the ones that allow you to, yeah. But how would you e.g. easily disable/delete Google Play Services (say, if you didn't want Google on your phone)? The disable option is disabled.
Also, even when I try disabling some of these built-in Google apps that I supposedly can disable, I get a prompt warning me that "If you disable a built-in app, other apps may misbehave"... you can't keep a straight face telling a user "oh but you can easily disable this!" when you yourself are telling them the consequence is that it might break other things on their phone. (!)
They just mean apps that use Google play services will be broken. I don't think that's unreasonable. it seems you want it both ways, you want the ability to remove or disable Google play services, without losing access to them.
Thankfully those are most often bundled as stubs that take barely any space. roll back the updates and then disable. Did that to Chrome for the longest time as i was using Firefox on my Android device (before Mozilla went nuts. Now i am flipflopping between Opera and Brave, while waiting for Vivaldi to get a mobile version).
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.