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.
Those on SNAP benefits do not have to pay sales tax. So unless they ban the purchase of “sugary” beverages the only ones that will be paying the additional tax would be those paying cash.