I am seeing a lot of folks coming into the ginseng community this year for the first time. Some coming back after many years away. I'm personally still mixed about the effects of those shows. Some of the effects I believe are negative as you and others have noted. On the other hand, I think many of the effects are actually positive. You are one example.
I honestly suspect that the less desirable folks will not keep working to find ginseng...especially after a market year like this... and will disappear in a year or so. However, those like you will remain, learn, and become a valuable member of the ginseng community.
If we (diggers, dealers and growers all) don't get too greedy, I think the market will stabilize eventually (maybe this year maybe not...I just don't know) and remain strong at a consistently reasonable price.
Lets face it, ginseng really isn't endangered at all. We find it growing everywhere and we can certainly find literally hundreds of thousands of tons of it being harvested every year from commercial farms in a sustainable manner. The quality of the ginseng we find growing wild, however, seems to be correlated to the amount of pressure placed on the plants by predators (deer) and human harvesters and developers. If we would just let it be for a few years, we would again see the quality we did in years hence. I'm not at all saying we need a cessation of harvest, only that diggers need to respect the plant and nature all together and realize they can't dig the same patch every year and not expect the quality to suffer for a very long time.