I’ve had T1 diabetes for over 40 years and am fortunate or unfortunate to remember a life of eating food to correspond to the insulin I took , that was so restrictIve , back then I avoided any sugary foods ,even had a list off the doctor to say what you could and couldn’t eat. then along came the Bolus/ Basel regime …… happy days now nothing is off the table so to speak, I eat anything and sometimes everything and just adjust my insulin to suit, I don’t have a sweet tooth never have , but back in the old days not being able to have it made you want it more , it’s so much easier now having the option of eating what you like , I do keep to a “ healthy “ diet (whatever that is these days ) but I don’t avoid foods because they contain sugar anymore