I had my name changing rights taken away on Facebook. I got a message saying I had breached the rules to many times and my punishment was keeping the last name

I had my name changing rights taken away on Facebook. I got a message saying I had breached the rules to many times and my punishment was keeping the last name I entered LOL I used that fake name for 2-3 years and only decided to try changing back recently and it worked. I wonder if it was a bluff by Facebook and I could have changed again at any time however.