Could you be more specific? Why do you think it’s not inherently unhealthy. I’ll argue the contrary here. Humans are primates; we evolved to eat an unrefined plant-based diet.

Consuming refined sugar is inherently unhealthy because it’s consumption causes insulin spikes and eventually insulin desensitization which leads to diabetes which is a strong predictor of inflammation. The same logic applies to any refined foods with concentrated amounts of fat or salt.

No whole plant-based food has the concentrated amount of macronutrients that are in processed food. You could argue that honey might be one, but honey’s been refined from pollen by bees.