Those machines are usually all plastic, acid doesn’t hurt them. And a lot of the acidity in energy drinks comes from the carbonic acid in the carbonated water and the citric acid that’s added. But those are present in a lot of sodas as well. They all have the carbonated water and a lot of them have citric acid as well. Something like Fanta is probably more acidic than most energy drinks.

The whole energy drinks are super bad because they are so acidic is mostly nonsense. The same was said about coke as far back as I can remember (and I’m an old man). Sure it’s very acidic, but lots of things we eat and drink are acidic, that’s something most of us can handle just fine. A lot of people think orange juice is a healthy drink, but it’s usually more acidic than soda and unless you squeeze the fruit yourself usually contains just as much if not more sugar.

Not to say energy drinks are good for you, the combination of sugar and stimulants such as caffeine and taurine is most definitely not good. But the same can be said of many things we consume. Our bodies like a lot of the things that aren’t exactly good for you. I’ve seen old folk complain about young folk drinking energy drink, whilst they themselves are drinking coffee with two sugars. When consumed in moderation energy drinks are totally fine.