"Recruit to deny" [1] has been getting more attention but still not enough.
1: https://www.nytimes.com/2019/11/29/us/harvard-admissions-rec...
1: https://www.nytimes.com/2019/11/29/us/harvard-admissions-rec...
Though, maybe it's just confirmation bias and ego. Maybe there was something in my application that gave Michigan pause but seemed fine to MIT. At that time, Michigan did ask which other schools to which you were applying. I'm not sure if that's still the case.
It's still frustrating as both his parents are alumni. Thanks to Covid and test waivers, 2021 seemed like a rougher year than normal to be applying to the higher end of schools.