Oh I heard about Theo Venneman, his conjectures weren't convincing to me. As far as I remember he tried to explain all Proto-Germanic words of unclear origin (unclear at the time) as stemming from Semitic but since then convincing derivations from Proto-Indoeuropean have been proposed for many of them, so his arguments are quite shaky.
I haven't heard about you (and you haven't heard about me). Why is it meaningful that you (or I) aren't convinced or think Venneman, an established expert, has shakey arguments?