Two arguments. Argument the first: Miko readily makes seemingly suboptimal choices over significantly easier alternatives for ascetic reasons. Or, if you want to apply that sentence to a very specific example, "no Miko not grabbing a wizard to teleport her is not a plot hole."
The other one is much simpler. Argument the second: You have a very poor grasp on Miko's established character, and your claims are made entirely on this poor grasp.
If he interacted with them after dark in anti-magic areas, he probably conducted his business by gaslight, at the very least.