Well that’s why I said ‘can’ lead to. I’m not saying literally everyone in that situation ends up the same, what I’m saying is it’s an indirect cause for some people. Of course there’s always other causes, whether direct or indirect.

Obviously not everyone who has a reasonable amount of sugar gets fat or diabetes.

However, NO ONE has actually claimed that straw man. This culture of 'only drink things that have at least a hundred calories of refined sugar added' is a huge problem for weight gain and diabetes.

In your analogy, yo usay removing the pancreas causes type 1 diabetes. This is absolutely a cause. Yet on the other hand you seem to be arguing that since there are other causes besides high sugar diets that can also cause type 2 diabetes, you shouldn't say high sugar diets cause diabetes.

High sugar diets are a huge risk. Some people manage to get away with such a diet without diabetes (but likely get other issues with weight gain), and some people have the misfortune to get it anyway, but the fact remains a high sugar diet can result in diabetes, though arguments can be had about how direct/indirect the relationship is.