The rest was just my experience of after I'd got to my goal weight on keto, of trying to stop keto and do something midway between keto and not keto. For me, that never works - some carbs each day, leads to more carbs, leads to lots of carbs. That was never an issue while on keto - I'd just go back to my highly restrictive diet, just that I never found re-introducing carbs easy to moderate. FWIW it's worth, I'm starting keto for the 4th time now. The first 2 times were effective, until I stopped. The third time I tried to be less restrictive than the previous two times, and I didn't really achieve any weight loss.
The "you" in that paragraph about sugar monsters was actually me, but I used the "you" form because I though it could probably generalise to whoever was reading, not specifically you in particular. Sorry for the confusion.