Nope. Wrong for two reasons: First, Rupp has been downsized from 23,000 seats to 20,500; they took out bleacher seats in the upper deck and put in chairbacks. Second, Rupp is in downtown Lexington, not on campus.
Louisville is indeed downtown. Rupp is only like a mile and a half from campus but it’s still not on campus. Georgetown, UNC Greensboro, Villanova and NC State also play in large (i.e. bigger than BWA) off-campus arenas.
Largest on-campus, hoops only:
BYU (19,000; used to be listed as 22,700)