Just a teacher says he can't help laughing at the rot he's read berating the school. He likes teaching there so much that he has done so for some years in a row. Good for him, but what's one man's meat is another man's poison.
He has chosen to enter the private education sector in China despite the fact he could have served the public sector where he needn't strive so hard in class nor run the risk of being duped financially at one time or another.
He is serving the offspring of the rich, and with this goes the additional responsibility of trying to motivate those born with a silver spoon in their mouths. I suspect that the school's detractors have grown tired of being lackeys of the rich, and furthermore are out to discredit it online.
Undoubtedly, some foreigners will be dissuaded from applying for a post there, especially when they note the racist approach to recruitment that has appeared on the school's website. Personally, that is as big a red flag as I need to prevent me from applying, irrespective of the other negatives. Just my two cents' worth, for what it's worth.