Consuming any amount of any form of pure sugar will spike your blood glucose. If it's a small enough amount, the spike will be small enough that it won't do you

Consuming any amount of any form of pure sugar will spike your blood glucose. If it's a small enough amount, the spike will be small enough that it won't do you harm, but the human body evolved to handle gradual rises in blood glucose, like complex carbohydrates cause, not spikes. Comparing that to water is a stretch.