Having done some work with the Chinese, I find those allegations quite believable.
This needs to be taken to the very highest levels in ICAO and given maximum exposure by whatever means. Safety auditing companies who work for mining companies, TV current affairs programs, consumer websites etc should be lobbied. Of course how you do that without losing your job (or going to jail in China!) is the problem......
For the benefit of non-aviation, non-technical people, some explanatory material would be necessary, because the uninitiated would probably think taxying at 9 knots a fair thing and would not understand the dangers of attempting to make every landing a greaser regardless of runway conditions. Or the effect a punitive culture has on safety reporting. Or the hazards of concealing errors rather than simply correcting them as they occur and getting on with life.