Earlier quoted context omitted.
That’s why you tax soft drinks instead of taxing weight directly. It may be difficult to lose weight but it isn’t particularly difficult to cut out the most extremely unhealthy foods.
I’d be ok with that, but I don’t think it’s all that simple to cut out unhealthy foods. One, most healthy foods are pretty expensive and a lot of unhealthy foods are not. It can be difficult for people on a tight budget to eat healthy. You also need to consider that a sugar tax can hit lower income people a bit harder.
You could use the tax income to subsidize healthy foods. Or just redistribute it to low income people.
It cuts in many ways: save money and gain health by drinking water/tea/coffee instead of softdrinks. Use the money for healthier foods.