Are Chinese martial arts evolving? Evolving to what and why? I would submit that most of those who have seriously trained any legitimate CMA style enough to effectively fight with it will be more inclined to engage in professional pursuits which necessitate such skills, just as the elite practitioners of previous generations did, rather than pursuing comparatively short careers as professional MMA fighters where the risk of more frequent and more serious injuries is more likely.
Greater professional longevity is easily enjoyed in the former non-competition pursuits, especially when combined with teaching or training others following retirement, and with fewer serious injuries or negative residual affects from same. I suspect that many pro MMA fighters will suffer greatly in their old age from the physical abuses of competition injuries received when they were younger, similar to the experience of retired pro boxers, body builders, NFL players, etc. Sad, but oftentimes true.