And then there are the people who do not even live in China, work in China, and aren't even employable in China; so, they spend their inordinate amount of free time online complaining about China.
It all adds up.

True, it does that! But I for one would never work for a training centre nor a private school here in China. However, I wouldn't go so far as to condemn either kind of institution as always lousy employers from every FT's point of view. I'm sure some are better than others, and maybe better than state schools/colleges. Nevertheless, I won't risk it for a biscuit.
As for the rest of you, please feel free to do as you please. But if you end up being burned, that's your folly.
As for complaining about China, there are those who thrive on it!
I would suggest that readers who are perplexed read the 'Middlekingdom' site, and the site compiled by the US consul in Beijing to get additional information written by impartial commentators. This board has kindly provided the URL's of those two sites for its readers.