Hi
Without insulin you can control your blood sugar by eating slowly digesting starches (people with reactive hypoglycemia do that) The only other problem I am aware of is that you need insulin to process excess protein into urea. If not you get a build up of ammonia and if you don't fix that you die. I do not know if you can control your protein intake and/or occasionally take insulin and/or some other treatment when you get out of balance. I have not heard from anyone who seems to know if that is a possible way to live. I was at a meeting where 1 woman just didn't seem to understand there are people who have to eat either a very low sugar/starch/alchol or only slowly digesting starches in order to avoid very debilitating fatigue (me). Somehow she thought I was eating my strange diet on a whim. I am unusual in my persistence, but I am not alone.
I can't believe I'm replying!
However, your first sentence is so wrong, as starch is a carb and being RH is carb intolerant! So eating starch in any form, is as bad as eating carbs itself and make your blood sugar levels bounce around. Which is the only thing that will make you feel better and stop the roller coaster ride of hypers and hypos!
You do not need or require more than background insulin and glucose which at normal blood sugar levels, your metabolism is at its best when continually in or around normal blood sugar levels. You don't need excess glucose for your brain.
Too much circulating insulin is bad for your health as well as consistent higher than normal blood sugar levels.
However, I have read a report from a university in the states that pregnant women and of course some T2s do get symptoms of reactive hypoglycaemia, not the actual condition, but symptoms.
You thesis, is just a theory, nothing more, RH is an endocrine condition.
It's the carbs and sugars!