You are right, of course. Wicca is not shamanism, although the two can be incorporated, they are not the same thing. I think, too, that there is a fundamental misunderstanding of what a shaman or medicine person is and does.
The incorrect information being passed about is a problem, especially on the 'net, where people tend to copy and paste info from one fluffy site to the next, where you have new "eclectic" Wiccans that study one of SRW's books and consider themselves an expert. I've been at this since about 1973, and I am by no means an authority, and anyone who thinks they are is fooling themselves, IMO.