Right. But the selling point isn’t “start packing pb&js for lunch”, but rather “go to a restaurant for the first time” or “worry less about your kid’s life being at risk from a classmate’s snack”.
We did achieve this with OIT for peanut allergy. Once we reached bite-safe levels, our lives literally changed for the better. We didn't have to worry about interrogating anyone serving us food (restaurants, friends, family), and we could go to some places that were just never an option before where cross contamination is likely or even expected, like ice-cream parlors. There's still a protocol we have to follow every day though, so an actual cure is still a dream for us.