If it works for you I say go for it. The problem most raw feeders find with frozen patties is that you don't know how much of what is in it. Most raw feeders follow the 80% protein/10%bone/10%offal model, so, with the patties, it is often not listed. Also there's the matter of bones - their teeth/breath don't get the benefits from chewing raw bones. I guess you could bypass this by giving recreational bones. I have frozen patties for travel and when I'm running short on meat - it's from a local company called Urban Carnivore and the label just says "ground whole chicken carcass" etc.
On the comment about raw meat for human consumption.. what do you think goes into these raw frozen diets if not raw meat??