With the "East is weak" narrative, I'd say wide open (pause) and weak are two different things.
If Wolves, Rockets, Lakers were to switch conferences today, they wouldn't be favorites over Cleveland, New York, or Boston. Maybe the Wolves would get the edge over Detroit due to the experience gap but the same would apply for the Knicks over the Spurs.
The West really just has one team that's been above the rest all season + has the benefit of playoff experience. That and the West has more nostalgic names (KD, Bron, Luka, etc.,) that have ppl grading their teams with rose-tinted glasses.