[HarHarVeryFunny]

> Some humans who are not trained that curiosity produces beneficial outcomes are often not all that curious.

Innate traits such as curiosity & boredom are things that we are born with, not learnt. The reason evolution has selected for these innate traits is because there is a benefit (encouraging exploration and learning which help survival), but you don't need to be aware of the benefits to experience and act on boredom or curiosity.

Innate behaviors can certainly be reinforced, or suppressed to some degree, by experience.