"paintball is spray and pray" is quite the blanket statement.
Airball, speedball, xball- sure.
Rec ball- no.
And then there is "Stock Class", the origins of paintball. 10 round maximum, and some of the stock class guns cost more than real ones or eletropnumatic paintball markers!
In my experience, MOST paintballers (not birthday party players but consistent players) know a considerable amount about their equipment. A large majority of aftermarket products you will see originated from tinkerers that had the great idea to market their garage productions. Many gun owners whom I know do not know anything about their guns, be it a revolver, semi, or shotgun, other than load-aim-shoot.