Here are some comments from Wellsung, which is probably going in the links bar now. My favorite bilious blogger, A.C. Douglas, does his thing. This actually turned into a contest of sorts between some of my favorite bloggers in general. Here, as it was on FtNW, are Douglas's comments.
The comment in question makes no sense. As has been pointed out often in this exchange, Wagner worked with many Jewish people. Hermann Levi, who had nice things to say about Wagner, is the most notable example. If Wagner thought that James Levine could do justice to his masterpiece devoted to the mastersingers and "holy German art," then Wagner wouldn't give a damn what Levine did on his free time. Wagner was a vile man with vile opinions, but - lest we forget - he was first and foremost about Wagner.