The ancient healers used body parts of animals that are wild, in medicines when the animals were in large numbers and were truly wild. In the present world the truly wild tigers, lions leopards etc are simply not there. The few which are out in the forests are mostly collared, monitored, even reared by humans and sent into the wild.
In that situation how can any doctor who uses TCM vouch for its qualities? Blindly following the tradition of elders who had few other options, is misleading patients and customers of TCM.