He feels that others might do well to move to somewhat higher carbs (but still low carb compared to most ways of eating, and obviously high-quality carbs) but keeping keto as a natural state to which you return often.
In other words carb cycling and this is a strong area of contention. Peter Defty calls it OFM but for example Brian Williamson is dead against it.
this is very individualistic of course, for myself I was able to go on holiday, eat far more carbs than normal (but not what I used to do) and when IU came back naturally slipped straight back in. Others with much higher insulin resistance would probably go through a much harder time (I suspect Jimmy is like this) and the re adaptation is so much worse for them.
I do have to say this is where exercise plays a large part. If exercise (as with Mark obviously) is a large part of your routine then you will be far more highly tuned and easier to go back in. I note Jimmy is starting to talk about the more exercise he has.
The maxim ‘you can not outrun a bad diet’ is still totally false but the new one should be that ‘exercise is a fantastic way of supplementing a Keto/LCHF lifestyle’.