I think that's 10 coats in total, base, color, blaze, clear.
Aaaah, I see what he's saying. Yeah, base colors and candies are super thin/transparent. They add very little to the thickness. Maybe a couple mils total at most.
When I painted my cruiser, I did 2 coats of clear on everything. It was a mistake because a lot of the parts simply didn't line up perfectly with the extra thickness. Next time I'm only shooting the tank with 2 coats of clear (for extra protection).
Also, FYIY, he probably applied several really thin coats. It's much safer to apply several thin coats if you are working with paint that you're not familiar with.