Performance psychologist Finnigan has worked closely with Moyes for 15 years.
"I don't care what it is, I always turn a situation into a positive," Finnigan told Press Association Sport.
"If it was a question of him never winning a title I would say 'fantastic'. It just makes him more hungry to succeed.
"Before I worked with Jimmy White he had never beaten Stephen Hendry. I didn't see that as a problem. I just felt he was learning how to beat him. And he did.
"It doesn't matter whether David has won titles or not, he will be judged on his interaction and within a couple of minutes the person will win you over.
"Any further perceptions are in the person's own head."