Thanks for the Info I'm not an expert on the topic.
And the Wiccan codenmae was a chosen because its the closest thing to a male term for witch, Wiccan never called himself a wiccan but went with either witch or warlock. So its the same as the White Tiger example. Just because you make up another Tiger God makes it not any less potentially insulting to a certain culture just like the choice of a name that also applies to a religion without ever attempting to make that connection is not.
There are christian folk out there who consider every depiction of magic offensive and hey, jews having magic powers could be considered pretty offensive, too, because that is an stereotype and don't get me started on gypsy witch Wanda. Or hey the depictions of gods thats pretty damn horrific, cause there are so many people who believe in exactly one god and could feel so offended by the fact that all these gods get depicted as real...
The difference between Power Man and Mr Fantastic is that the guy who had the name originally wanted Cage to stop using it guess who is going by Atlas these days. Or maybe he doesn't. Maybe he is dead. And Wiccan is not that different from Shaman except Shaman has been potraying that culture somewhat wrongly for years now. Brother Vodoo is not a pretty accurate depiction of Vodoo and Son of Satan... well, you get the idea.
And you don't need to be an expert on the topic to see Ewing has a massive case of white guilt in his interviews, comments and comics, just like you can tell he has no particularly close connection to any of the minorities he is trying to write.