By my count, right now there are 27 seats available in South Stadium (all right at the top, all have at least two seats together, mostly in just pairs), 5 seats available in West Stadium (all single seats), 2 seats available in East Stadium (both single seats), and 569 in North Stadium, mostly at the top. So there are about 603 unsold seats - less than 1% - 2+ months before the first game. Meaning there are, what, 5,000-some more tickets sold now than two years ago. I don't see this being an issue.
It's not an issue as an isolated thing.
When it's coupled with the bowl game charter being cancelled for the first time in years, declining bowl sales the years before that, and obvious splotches on game day, regardless of start times or cozy students, it could be an alarming trend.
I know the "bad bowl opponents/early games/crummy home opponents" reasoning is there, but the at times questionable play by the team has a lot to do with that.