Even if we assume that masks actually have a significant impact on spread, I'm still completely confused by this line of argument.

Is the premise that there is some specific quantifiable level of cases or deaths/day at which we can play college sports? If so, what is it? https://twitter.com/RobDauster/status/1293285473402736642

If we wait for eradication of COVID-19, we won't have college sports for another 10 years at minimum. So it can't be eradication.

So what then is the standard? When are we allowed to have college sports again?

And if the answer is that college sports is only to be allowed after we have a vaccine, then why is the media bombarding us with the "IF YOU WANT SPORTS THEN WEAR A MASK" talking point? Masks won't help us get a vaccine faster.