My interest in DU goes beyond my alma mater. My dad is a DU basketball alum. He was very close to the program for a long time, but was not close during the Joe Scott era. Rodney seems to have done a better job of connecting with the past members of the program, Joe Scott was kind of a dick. And according to basketball reference, the men's team has never played in the small gym. I certainly don't recall a game ever being in there.
You're also wrong about the WCC. The WCC does not equal Gonzaga. Aside from Gonzaga and BYU, the rest of the conference has similar support to Denver. San Francisco and LMU have history, but this is not a conference that is drawing thousands and thousands of fans. The average conference attendance in 2018 was 3575 according to the NCAA. BYU averaged 14,000+ because Mormons, Gonzaga averaged 6000 (which is a sellout, I thought their arena had like 9000, I was mistaken), San Diego had 1857 with their best team in the last 10 years, including a Gonzaga sellout like
@ahoelsken mentioned, and a San Diego State sellout. But the most important point, the WCC is not just Gonzaga. No matter how many times you try to compare DU to Gonzaga.
Edit: This tangent should probably be spun off into it's own thread instead of the stickied schedule thread. Mods?