While there is more to be said, /u/georgy_k_zhukov has addressed this issue in this comment here and summed up as

While that didn't totally settle the matter, after that point, the bulk of professional scholarship can pretty safely be said to be opposed to Bacque's position, with his argument being generally consigned to the realm of conspiracy theory, and latched onto especially by German apologists and Holocaust deniers, which, as noted with prescience by one reviewer twenty years ago, was sure to keep alive the "highly questionable thesis."