I've already posted a video showing Infectious Disease Doctors discussing Omicron...they made it clear that you need to have three shots of an mRNA vaccine in order to be "Fully Vaccinated", and I doubt that all college students qualify for that guideline...plus, those students are part of a community that includes older faculty and staff, not to mention the towns they live near and the people there that they come in contact with...many of whom are likely to be "unvaccinated"...while in the interests of maintaining an optimal learning environment, they are still potential "Vectors" for the transmission of COVID-19...certainly you understand that...so, it is incumbent on them to follow the guidelines, however 'onerous' it might seem, until we ALL exit this pandemic and enter a new "Endemic" phase.
Not all doctors get this...and the author of your link appears to be one of them.
Link: https://fortune.com/2021/12/15/colleges-on-campus-covid-measures-omicron-variant/