I can see what you are getting at and endorse the idea that preventative maintenance is a better approach than having to deal with problems later that could have been prevented. It just seems to me that blood glucose control for most T2's goes off relatively slowly and a periodic check of HbA1c is enough to keep an eye on things without the need to take the steps necessary to drive it to levels well below anything that would give rise to concern.
As we keep saying on here, there are many ways to approach improving blood glucose control when given a T2 diagnosis and different people will be most comfortable with different approaches. Targetting a very low HbA1c might be good way for some but i think we should be aware that there are people for whom such targets will be unattainable without extreme methods and nothing should be said that might stimulate any anxieties that group might have.