How does opening a college increase the death toll? Herd immunity happens at around 20%. If young healthy people become infected it actually protects the people that are at the most risk.
A few of the young people will die. Not many, granted. They interact in the community, though, they don’t teach themselves or prepare all of their food themselves. There are professors, custodians, food service workers, campus police/security, advisors, teaching assistants, maintenance people, coaches, support staff, counselors, training staff, strength coaches just on campus. Then there are all the off-campus parties, restaurants, bars, etc
It is an extremely contagious disease. The young people that get infected can still spread it to others, even if Asymptomatic.
Even if you eliminate the off campus stuff, if you just let Covid run rampant on campuses, it will infect the people I named above, and more, and then those people will bring it home to their families, and those they interact with in the community. That will increase the death toll.
Fortunately, it appears that most of the University Presidents are intelligent enough to grasp that the situation goes much deeper than simply “young people are extremely unlikely to die from it”
Eventually we will get stronger leadership nationwide, with more widespread contact tracing, and testing. More than likely we’ll be in a Nationwide lockdown/quarantine from late January through mid March. Hopefully we can come out of that with some intelligent approaches to re-opening, along with hopefully better treatments, therapeutics and maybe even a vaccine that works.