Did the person block me on here or did they deactivate their account?

i can still see their questions and replies but it says anonymous HOWEVER, when i log out of my account it shows their name and i can view their profile.. but when i login and refresh the tab that is on his profile it says "That user couldn't be found. Are you sure the username is correct? The user may have changed their username or deactivated their account."

did this person block me? it doesn't matter and i could care less.