Ahhhh but a Dr.Who did occur in the life of the early Doctor Who. Peter Cushing starred in versions of William Hartnell’s first few stories, the first being Dr.Who and the Daleks and Daleks’ Invasion Earth: 2150 AD where Cushing played a time traveling man called Dr.Who.
Annnnd One and Two were billed as Dr. Who if you look into it.
So that why people probably get confused but technically they are right. So go easy on them.
fun facts, everyone!