Have you watched the entire series or did you dismiss it just because they were not allowed to sleep in a building that had been derelict for years ? Having watched the entire series your comments seem to contradict everything I got from the show. Even if you seem to think it's a crude historical re-enactment, I am very disappointed that you could not see past that and notice as I did that as the series progresses they each hone their particular skills. Case in point the Oxen and the men develop their muscles and take pleasure and satisfaction from the hard labour so that by the end the humans and animals had formed genuine bonds. 

However we are all entitled to our opinions so to make it clear, what I was trying to point out is that there is a wealth of information available to you on living with nature and having healthy food from the writings of peoples who lived prior to the onset of Industrialization. While you may mock the historians who like yourself were attempting to recreate the skills lost to time, the information they were basing their actions on was written by people who will have used those skills all their lives. Those peoples left detailed records of their traditions, practices, diets, technology describing how life was lived for centuries. If you can see past the reality show aspects, you might want to chase down the books that they mention in the show which should be out of copyright by now. There is probably an equivalent stock of literature available to you from the Czech Republic.

In your show you mentioned that the families were inaccessible in the winter, so I understand Weston A Price would have only seen the societies during a time of plenty. He may have seen them as healthy people and attributed it to their diet, which given he was only there for the summer would have been full of rich fatty foods. This would seem to agree with what the historians say the diet of a homesteader would have been in the summer. This would seem to back up your point of giving our children rich fatty foods as the evidence as presented would suggest that this would lead to health.

However as the historians point out, during the winter their diet changed radically to the point of starvation. I don't know if Dr. Price took this into account or not but if you assume that he did then the advice to eat fatty foods should be given with the caveat that it should be for a short period of time and that you should also starve yourself for a significant portion of the year. If you wish to eat a pre-industrialised diet, then research that diet and present it in it's entirety with evidence from multiple sources. Sources which this television series proves are available to you.