Exactly. The only argument for leaving the WCC that might convince me is the “WCC foes don’t allow Zags to improve enough during the season to compete well vs NCAA tourney teams” but that argument has been blown out of the water by Zags’ tournament performances the past 5+ seasons:
2015 Elite Eight
2016 Sweet 16
2017 Championship game
2018 Sweet 16
2019 Elite Eight
2020 ? Covid cancelled tourney
Their gaudy regular season records earned primarily vs WCC foes allows Zags to get favorable seeding which in turn makes path to Sweet 16 easier, but as long as the goal is to win the natty than would be foolish to leave WCC. It’s working for Zags. Only some bizarre kind of inferiority complex would lead one to conclude Zags need a Power 5 conference membership to somehow validate the program.