Apologies I’m not sure what you mean unless you are intimating that if T2 diabetics eat potatoes they will lose control of their BS?
I follow the 80 / 20 rule. I believe potatoes are not sustainable for the 80, the obseravtion that most in remission do not do potatoes I believe to be fact, because they spike most of the time when tested. I think there are a lot who have tried to incorporate this veg, and found out it is not for them.
Some "big wigs" in the lower carb movement such as Phinney / Vollek, Fung, Westman, Berry, Lyons, Naimen all with practices, never mention potatoes in the protocols they give their tens of thousands of patients treated for diabetes; I have not seen one senior low carb Doctor, or come to think of it influencer, use potatoes as part of the reversal / remission scenarios. I have not seen on Diet Doctor or similar the inclusion of potatoes, or in the several programs I have read such as Atkins, Bernsteins, several ebooks with versions of low carb / Keto / carnivore. My wife does not use potatoes in her practice. Although I have appealled to authority, I think it is relevant what the "experts" choose to do.
No one is forced to to a low carb protocol and maybe a low calorie diet includes starchier foods, or persons just choose of free will do have a potato option on no particular dietary pattern.
Persons such as Stan Efferding and Mark Bell (who have sports based clients) do advocate potatoes on occasion with meat, for elite power based athletes.
I choose not to do potatoes, along with yam, green bannas, rice, pasta, bread, bread fruit etc. I researched how potatoes were cultivated which formed part of my decision, along with knowing it was one of the foods I was eating at peak diagnosis. Like rice, I think the protein and or sauce that goes with potatoes tastes better, so mentally I personally got over potatoes years ago (I do appreciate others like them).
The purpose of my post was to present an alternative observation for newbies, who might think that potatoes generally work for Type 2's. I do feel that 80, of the 80 / 20 rule would loose tight control of their Type 2, if they ate "normal" size amounts of potatoes.
Ironically I could probably eat potatoes, as I have larger than average muscle mass which is a glucose sync, so I would probably spike and come down quickly, but will never knowingly eat potatoes or things made from them again. I do include butternut squash, carrots and beetroot probably 3 or 4 times a week with family meals, I also have clementines around 3 times a week in a predominant Keto Carnivore lifestyle, tested many times via manual monitors, Libres and A1C's.