I guess it's not that absurd to think that wizards meditate in yoga-ish positions. I mean, less absurd than the idea of people shooting lightning and fire from their fingers while shouting exotic-sounding mantras.
Yes, Bellerefo is barefoot. Deal with it. I have a respectable foot fetish, and I don't care if it's not realistic that a character goes dungeon running barefoot. Is magic realistic? Is the concept of dungeon running realistic? Are those boobs realistic? No, so just deal with it