First, that has wavered from 3 to 10, and anywhere in between,
Basically, three things happened:
1) Rutgers had 28 positives, quickly followed by news that players had shown up at an on-campus party. (In other words, "If players won't even 'try', why should the risk be taken?")
2) Facebook post from Indiana player mother talking about her son having myocarditis post-COVID.Was not substantiated, but evidently, several B1G "bigwigs" saw it, or were shown it. (In other words, "What do we NOT know?")
3) Kevin Warren made no mention of his son's status at $EC-member MS State since the announcement. Also, he and B1G Presidents got played. Look at half the doctors they cited (ACC, SEC, etc, med schools and hospitals). Those other schools MAY cancel their seasons, but NONE will look as stupid as Warren did, given lack of detailed explanation, the fact his kid is at an $EC school and may still play, etc.
The last, while an important point, shouldn't be the overriding factor. While I know many Iowa parents want the season to go on--and I do, too, of course--there ARE parents (I have interacted with an Iowa parent) who agree/are okay with the league. And i won't second-guess those sentiments in the least.
Bottom line, from a parental perspective, is that you want what is best/safest for your kid.