I remember years ago how anti-smokers and teetotalers rubbed their hands in glee as "sin" taxes were imposed on tobacco and alcoholic beverages. We told them back then that eventually they would soon come after food items deemed unhealthy by the nanny staters and they told us that was nonsense, that tobacco and alcohol was as far as they would go.
If they are so unhealthy, then just ban them. But no, government just wants the money.