I didn't deny the problem of language mill business model, I said it wasn't purely the business model. That business model can only exist while underqualified unregulated teachers are allowed to work in China by the Chinese government.

That's not to say the business model is not also at fault, but it is a multilayered problem.

I don't need to refute your points regarding teacher training as I agree with them and always have done. I just don't agree with your assessment of the DELTA qualification.

As for you being bitter, that stems from your apparent need to insult me at every opportunity, I have always said I don't doubt your dedication to education, it's just that the way that you attempt to belittle people for disagreeing with you that I find distasteful.