You would say the same about sugar in some aspects, I guess. The hitch with chemical addictions is that they are more or less not up to you, once your brain is hooked you're locked in until you put extreme effort to break out of it. With sugar it's in many cases given to you when you're young and before you have developed the awareness or agency to avoid it. It's also in nearly every store bought food and is much more difficult to avoid. It also doesn't have immediate drawbacks that are quite as severe as alcohol (you're not getting a DUI for eating a tootsie roll).

There are a lot of things like these that are just bad for us on an objective level but that we do anyways because they hack our weak little monkey brains. I don't even think it's hypocritical to partake in sugar or alcohol while openly saying that they're awful for you and that you should avoid them. The fact is that they're addictive, and an addiction by definition means that your actions are on some level no longer in your conscious control. Unless I am actively dieting I don't think twice about eating a candy even though I know that by all means I shouldn't.

In theory yes but it’s hard to avoid in practice. It doesn’t cause the same amount of acute damage and altered state though. But either way yes I don’t eat sweets like candy and generally keep things like donuts and cookies to one day a week.

Yes to water. Unfortunately I've already been chemically addicted to foods that taste good but are bad for you. If I didn't have that addiction and didn't care about taste then it would absolutely make a ton of sense to eat a "no more hunger" capsule daily, you'd save plenty of time and money and would be a lot healthier in general.