I don't buy the "sugar is inherently bad" hypothesis.

I don't know much about inherent badness but if you also happened to not buy the hypothesis "at the margin for the overwhelming majority of people in western civilisation additional sugar is detrimental" then you would be significantly misinformed.

It seems to cause inflammation in high amounts

See also: insulin resistance.

but excluding the micronutrient dense fruits such as oranges, bananas, apricots, and above all, coconuts, from your diet in moderate amounts seems like an incredibly bad move.

I happen to include those foods in my diet. I no longer believe that I am virtuous for doing so. The advice 'eat lots of fruit and vegetables' is bizarre, it's like comparing apples and oranges would be if they were not, in fact, so similar. I suppose it makes sense for anyone with completely inadequate vitamin intake but for their role as a macro-nutrient source the two are a world apart. (Exceptions apply on both the fruit and vegetable side, including those previously mentioned.)

, and above all, coconuts, from your diet in moderate amounts seems like an incredibly bad move.

When considering the moderation of sugar intake from fruit the emphasis on coconut seems rather odd. Coconut is largely a (saturated) fat source, not a sugar source. It was even mentioned in the grandparent that the lower sugar fruits are worth researching. Clearly coconuts were not something being discouraged. In fact, given the encouragement given to both low sugar fruits and saturated fats I would infer the reverse.