Hmmn, having read that, a couple of things spring to mind.
They say that the use of statins can increase blood glucose levels in a small number of patients, but without doing a comparative test, how would I know? My fasting levels are in the 4's with the statin and I'm getting the benefit. To some extent does it matter, given the other benefits of statins. (I realise this is an arguable point - I think they are helping my cholesterol so continue to take them).
They also say that statins can cause an increased risk of being diagnosed with diabetes. This doesn't make sense to me. Initial diagnosis is often made due to a simple test of blood sugar (or fasting blood sugar) and if the statin was increasing the reading then a diagnosis of diabetes might happen as a result. But then surely a glucose tolerance test would knock that diagnosis on the head for a non-diabetic patient who is simply being affected by a statin. Don't I have high blood sugars because I'm diabetic, not the other way around.