As someone with a pretty drug-friendly friend group… I’m surprised to hear that happens ‘a lot’ because I have never heard of that, or experienced it myself.
In my experience, you eat food because it tastes good - and while being stoned might make some foods more satisfying texturally (ice cream when you have cotton mouth is rad) or lower your inhibition to try weird stuff, or to alter your perception in a way that exposes you to new avenues to appreciating familiar foods - I really can’t imagine that not transferring to being sober. Peanut butter and pickles still taste good sober, even if you develop an appreciation for them while stoned.
Are you saying a lot of people just stop experiencing hunger? Like does their stomach not growl and feel empty unless they’re high? Really having trouble thinking of what you could be describing, and squaring jt with what I know.