Rob, I am 70 now and had the same concerns about protein intake. However, Rosedale has been asked about this and he responded here:
https://drrosedale.tenderapp.com/kb...ose-over-age-65
During fat burning with very low carb intake the situation is different. An increased protein intake (even if not high) reduces autophagy and as we age this should not be done as we need to do lots of repair.

I do however agree with you that everyone is different and you have to do what you feel is best for you. The only difference between the Atkins induction phase and Rosedale's diet is the protein intake. So, if you are on Atkins induction and watching your protein, you are more conducting a Rosedale diet than an Atkins diet. But these are just names. I think that unfortunately Atkins died too early (about 2002) and probaly wasn't familiar with Rosedale's work. I have not been able to find anyone contradicting Rosedale's ideas with logical reasoning.