We cannot say this for certain given the multitude of variables in play.
I know I fail at this sometimes and let myself get carried away, but I do try to avoid dealing in certainties. In this case, however, I'm going to take the CDC and NCAA high risk assessments for contact sports as pretty close to certain.
What is the only known way this virus spreads? From inhaling droplets exhaled from an infected person.
What is the only known way to combat the spread of the virus? Wearing a mask while keeping at least 6ft away from other people. This is something that is not possible in football, and thus there is an increased risk from playing football.
You are conflating two things here:
- an increase in risk due to the nature of the sports
- possible reductions in risk due to mitigating measures
It is entirely possible we find a way to mitigate the risk, but that doesn't mean the risk isn't there.
So, until there is even a shred of evidence to suggest there is no increased risk from playing football we absolutely can say this is as close to certain as it gets.
We have to compare Option A, "playing football" to Option B, "something other than playing football".
We know that Option A would include extensive testing and symptom monitoring, a heavily controlled environment, heavily structured and controlled lifestyle and living conditions. It would also include high exertion respiration in close contact to a large number of other people.
I'll agree with most of this except for your claim that the NCAA can control players lifestyles. That's a laughably false claim.
What we don't know is much about Option B, but would have to make some assumptions that it would be "normal college kid stuff". I don't think anybody really thinks Option B is staying home in a relatively safe/sterile environment. If option B is spending time at house parties or in the bars, then Option A may be much safer (assuming that team rules would prohibit such activities).
I hate to repeat myself, but Option A doesn't preclude spending time at house parties or being at bars.
I said this months ago, but I don't think campuses will be open in the fall (maybe Nebraska will be, but there are going to be some/many that won't be). It's going to be hard for a college kid to do normal college kid stuff in town with no college kids in it.
Regardless, let's assume campuses are open and football is cancelled. If a player gets sick because they're out partying, there is no increased risk to their teammates, coaches, and opponents. It would just be normal community spread.
This is why we can't say that Option A "playing football" is less safe than Option B "something other than playing football" in terms of Covid transmission.
If all variables listed above were constant between Option A and Option B, then not playing a contact sport would very likely be safer, but that's not realistic.
For all the reasons I stated above, I respectfully disagree with your assessment.