You are correct and I'm not trying to knock your fanbase. Wins and losses are what really matters. It's just odd watching a team of UK's caliber playing in such a big arena produce such little enthusiasm. Especially considering how you played today.
The perception is framed by what you see on TV, for the most part. As others have stated, those lower seats cost a small fortune, when trying to nab them off of some longtime season ticket holder. Plus, I think the size of the building negates some of the effect of the crowd, when it actually is getting pretty excited.
In 2014, I was lucky enough to have a family member that had never been to Rupp, and she asked me to find some "good" tickets to an SEC game. I found 3 in section 17 (sort of inline with the goal at that end of the court) for a game against LSU. $425 for the 3 seats. She almost had a heart attack, when I told her the price. After comparing notes with other people the past couple years, it has turned out that was a pretty good deal.
What do decent lowers cost at your arena?