All this will do is get the universities to rename the positions. Like Cal State already classifies coaches, presidents, and any faculty as administrators. Also athletic directors make about the same as university presidents and most coaches aren't paid any higher than a lot of professors.
Great - if the disparity is as small as you claim, then this legislation will not be burdensome for most colleges. It will be targeted at the Nick Saban/Dabo Swinney/John Calipari class.
You're missing the other point they'll just reclassify the job title. It's an easy workaround. Also, I believe college sports practice is technically a class. At least it was at my school.