I can't find anything on this man, other than his own poorly translated page.
Does he have any reputable published materials?
Does he have any clinical studies? It does say he headed the Military Sanitorium in Poland and worked as their dietician. Surely, they should have some data that would help his cause?
Again, based on your plug for this man's diet, you are recommending a diet of pork rinds for health, he doesn't even seem to want you to eat any plants.