YES. But with samsung is worse. I can't disable the calendar app, or not add my google accounts there. Your account is added, and the only thing you can do is de-select the calendar to not sync/display notifications...
That's why I never use my real google account with my phone. Android phones offer too little control over what is perhaps one of the most important digital asset I own: my google account.
(for the record I've disabled a lot of stuff on my Galaxy)