I think yes, because they think too much. It is easy for below average minds, I play better after couple of beers , to dumb down. I have an average mind.
I did notice something new yesterday while playing banks. It seems that with age it takes more time for my brain to fire to correctly execute shots. I noticed when i took more time than usual looking at the banks an then again when i was down on the ball i was seeing and making more balls. As a normally fast player this is going to be an adjustment i'm going to have to make in my shot routine i guess.