I've just had a look at your link, Freema, and I get the impression that this article is aimed at non-diabetics. Although I appreciate diabetics are mentioned, it seemed to be in relation to blood sugars rising both in diabetics and non-diabetics, suggesting spikes are 'normal' and 'acceptable'
I don't feel this article takes Insulin Resistance into account either, to be honest.
The remainder of the article appears to be about general fitness and building/maintaining muscle. In my opinion, it's not appropriate recommending it as a way forward for diabetics, unless they have good knowledge about how carbs are tolerated by the individudal.
My belief is that, if wanting to lose weight, then one must eat less carbs. Increasing exercise, if able, is also beneficial. Obviously, there is more to this but, is a general theory of mine.