Most human beings are inherently degenerate, so absolutely can catering to their interests be degenerate. Just as the Romans catered to the degeneracy of the masses with the gladiators, our government does today with sports. The overwhelming majority of children will never make a career in sports or arts, yet they waste time, vital years of learning, the ability to put off pleasure for work, and even their health in pursuit of it. They take the most basic of math and science classes, and many of them graduate illiterate and incapable of performing basic algebra. I'd like to see what statistics you're referring to regarding Europe, because I'm 99% sure that we place more emphasis on sports in our schools than the rest of the world.
EDIT: Also, the schools with the very best standardized scores are usually either Asian or Finnish, both of which place hardcore emphasis on STEM.