Yes I have heard multiple people (including a chiropractor) say that drinking coffee dehydrates and I outright reject that claim. Only referencing chronic consumers bc I’ve seen it with my own eyes.
Tangentially related; I used to know this older alcoholic dude and he claimed he hadn’t drank water in 20 years 😂😂 I really did only ever see him drink coors light and crown royal. Also saw him constantly smoking marb 100s and I saw him threaten the neighbor with a machete once. Legend