You are right in many cases. But it’s complex.
I have “substitutes” where I don’t need the original and I actually lived without it for several years very easily. But it’s fun, it probably has its role too, sometimes it’s extremely useful so why not? 
And in many cases it takes me farther from the original, way more quickly than “normal” food. But it’s not very important, usually as I don’t what the original. If I wanted it, I would eat it. It still helps with some lingering attachments or I use certain sweets to lower my need for sweetness or sweeteners, they are way more effective than not eating any (and fun even if I don’t need them).
I have the rebellious part, yeah, I need to feed it too. It behaves surprisingly well under 20g net carbs though. I am sure sometimes I needed clutches or comfort. I give up this (not a big thing as I decide on it but still), I want something new. But if I am fine with my normal food, I still love trying out things. I actually don’t care if it’s some substitute or mutton goulash, it’s new and fun. Actually, meat works way better than subsitute sweets and snacks and bread but not everyone can eat meat every day.
I don’t call most of these substitutes, by the way. Most dishes can’t be substituted. Sometimes I really switch something with something other but it’s usually just the role, the dishes themselves are pretty different.
And it’s hard for me to see something as a not proper food. Almost everything is proper food, just a different kind. I think I am not sensitive to those distinctions. And I definitely don’t consider the keto version of a food the worse, imitation one. It’s often the real, proper, improved version for me. I omit unnecessary and even harmful ingredients. It depends on the food and the person who decides these things 
Whatever is the case, I eat whatever I fancy, I really don’t care much about rules except the ones which are strongly connected with my health and well-being. I don’t eat too much carbs for too long, that’s not hedonistic for me at all.
I don’t say many cases aren’t pretty unlucky and bad…