A big part of the problem is that if you go to a doctor with diabetes, 90%+ he will tell you to use insulin. He won't tell you to loose weight and go on keto diet.
Still popular opinion is that eating meat and fat is bad for you (heart attack) but no many understand that eating sugar and carbs is a highway to diabetes).
In fact many people who go on keto and reverse diabetes report that doctors instead of congratulating them and telling other patients to do the same, tell them that keto diet (i.e. eating lots of meat) will give them heart attacks.
Most people don't know how bad sugar and carbs are because no one tells them.