[Fluorescence]

No, not over a certain level (low/no fibre would be it's own type of bad).

Carbs give a type of satiety I can't replicate with unlimited fat/protein/fibre. IMHO it's not actually hunger/stomach related but relief from withdrawal symptoms. Carbs are CNS stimulants that trigger serotonin release and very addictive to me at least.

After fasting or eating keto for a sufficient duration this carb specific form of absence/satiety no longer exists. Hunger/appetite stops feeling like a gnawing craving desire, instead it feels like a more neutral empty/weak signal.

Anyway, if eating carbs, best bang for buck satiety is the potato.