> are all people with IQ supposed to be doing groundbreaking research?

I don't know about "supposed to", but... it's a reasonable hope or expectation, right? That someone with extraordinary capabilities would want to use them for some extraordinary benefit for mankind. I appreciate vos Savant's contribution to public knowledge, but if you have the ability to make your name by progressing something extremely challenging (like the Riemann hypothesis) then wouldn't you want to try that?

Reminds me of that scene in Good Will Hunting where Sean presses Will on why he sticks to manual labouring when he's far smarter than highly trained university professors.