IQ is about aptitude and credentials on specific topics are about knowledge and skills. It's the wrong thing to optimize for.
Besides, high-IQ students can still underperform for many of the same reasons that average-IQ students often do (e.g., under-preparation, lack of discipline, disorganization, mental illness, financial distress, unstable living situation). We should be better addressing those things before students get to a university no matter what their IQ is.
Beyond that, if you have good competency tests on both ends (i.e., the credentials before a four-year degree are accurate signals, and university degrees effectively prove a high degree of competency), who cares if someone manages to get those credentials by working harder while being dumber? I like working with clever people. I also like working with people who know their shit because they take their time to study and consider things. (When I'm lucky, I get to work with people who are both!)
Besides, high-IQ students can still underperform for many of the same reasons that average-IQ students often do (e.g., under-preparation, lack of discipline, disorganization, mental illness, financial distress, unstable living situation). We should be better addressing those things before students get to a university no matter what their IQ is.
Beyond that, if you have good competency tests on both ends (i.e., the credentials before a four-year degree are accurate signals, and university degrees effectively prove a high degree of competency), who cares if someone manages to get those credentials by working harder while being dumber? I like working with clever people. I also like working with people who know their shit because they take their time to study and consider things. (When I'm lucky, I get to work with people who are both!)