I'm in this camp but I suspect its more from never having it prepared "properly". I was at one of those Argentinian grills and they had tripe on the grill along with sweetbreads. Both tasted like vomit. Sweetbreads are really great, and in no way related to tripe. Sweetbreads have always been a super delicacy, and aren't really part of this whole eat innards revival. Tripe has always been the cheapest cut possible, and, in my opinion, for good reason. Edit: The above refers to veal sweetbreads. Beef ones are disgusting.