In the US, college sports are the primary path to professional sports for men in multiple sports, most notably football and basketball. .
There is no "professional sport" when it comes to gymnastics though? Unless you move to circus or similar the fact is you do not get paid for competing in gymnastics, like you do for playing football.
So college will get you 4 years of trying to complete your degree while competing college, rather than focussing on elite competition. With no paid gymnastics job at the end of it.