Earlier quoted context omitted.
That's interesting but the rate at which sugar is metabolised is more relevant. If it's not consumed fast enough, then yes you have a problem. Drinking a coke while at rest is definitely a problem.
> the rate at which sugar is metabolised is more relevant It's not "more relevant", but it is deeply related and important. A low glycemic index food will spike your blood sugar much less than a high GI food. And the relation of a food to blood-glucose is not fully intuitive. Sure, soda is obvious because it contains pure sugar. But carrots have roughly the same impact as soda.
The issue wouldn't be so much that a coke has a large amount of sugar compared to expected blood glucose levels, but rather whether that can of coke puts a person in a caloric surplus. At any point in time there might be some glucose either coming in or coming out of our bloodstream. Expected blood glucose levels don't tell us much about that. For instance, two people might have the same blood glucose levels but two completely different energetic requirements due to differing levels of physical activity.
At least, that's what I get from the post you're responding to. Mind you, I don't think that a calorie is a calorie: consuming shitloads of sugar might be bad for anyone for other reasons besides inducing caloric surpluses, so energy sources aren't perfect substitutes for one another. But I don't see what insight is to be gained from the relationship between the amount of sugar in a coke can and average blood glucose levels either.