In general the folk on here are aware and determined to do what they can for themselves but many, if not most, folk are willing to trust their doctors, or possibly too scared/depressed/ill and/or apathetic to fight for what they need.
A friend of mine has a mother with T2 and she (mum) flatly refuses to change anything about her lifestyle (her diet is healthy for a normal person, not a diabetic) and won't accept that the meds can't do it all. She doesn't want to know. Her doctor doesn't bother with her and she only has her HbA done once a year then doc increases the dosages again.
Another believes doctor knows best and can't understand why her Diabetes is so poorly controlled. She doesn't have access to education, no test strips even in the short term so she can learn how food affects her. Nothing. She has an HbA done twice a year and her toes tickled, no eye tests and no other support.
These two aren't at all unusual examples. And I've tried, gently, to get them moving to no avail. I bet we all know quite a few who fit these models too. A combination of apathy and fear on the part of the Diabetic and penny-pinching inertia on the NHS side is, in my opinion the root cause of the rise in the cost of treating this condition.
I know, I'm preaching to the converted.