There's two dynamics at work here, I think -- one is that a lot of CMA people probably want a venue to fight and use their techniques and think they're not getting enough partner practice, but the training and venues for such fighting don't really seem to exist. The MMA venues aren't really applicable to CMA technique, are they? And sanda/sanshou is watered down.
Some people on here have agendas -- if they're pro teachers why would they waste their time posting on here? Obviously it has to do with promoting themselves and their products. Everytime lkmfdc posts he's advertising his site and his DVDs. So he wants to promote his way which is sanda/sanshou/MMA with a CMA background.
A lot of people posting on here teach private classes, and obviously they want to get more students.
So that's probably why it keeps coming up.