If there are three people in the upper deck student section, it is not technically "empty" - and perhaps that is the disagreement here and that is your requirement for the statement that the student section was often missing a lot of students. Either that or your memory is simply flawed or blocked when it comes to student section attendance.
Here is something that was written as recently as 2019 (which is the year the issues with the student section actually started to improve)...
The Gophers are 8-0 and attendance at TCF Bank Stadium continues to grow... but the student section still has plenty of meat on the bone. Here’s an open letter, asking you to change your best for the good of the program.
www.minnesotasportsfan.com
But, giving you the benefit of the doubt - If the student section never did have an attendance issue, why did they shrink it by two entire sections on the first deck (Sections 119 and 131 used to be part of the student section, and no longer are) and what was
Jerry Kill doing handing out tickets to students around campus in his early years?