There is a ton of information asymmetry in education. (The parents don’t sit through the classes, and the kids have no reference points), which means it will devolve into a “market for lemons” in the absent of regulation.
In this case I would say that the latency of finding out a method or microschool isn’t teaching in an effective way might be longer than I would like to see as a parent.
So that’s a small problem as this is all rapidly developing.