I also continue to enjoy and value my teaching experiences in China.
Even if your evaluation of this forum's frequent contributors is correct, and I believe it is not, their character as expressed in their on-line discourse does not preclude the validity of their observations about China's private English language school industry.
Your efforts to discredit them speaks to your own motivation in participating.
Having taught in China for seven years, you must have worked at one or two institutions that you could review here to assist those whom you encourage to 'embrace the challenge of teaching in China'. I look forward to reading that positive informative contribution to these "archives."