Well ofcourse if you are gluten intolerent because of a genetic disorder such as celiac disease then you will never be able to eat gluten, irrespective of whether you heal the intestinal wall.
I'm refering to people who develop temporary gluten intolerance due to a compromised intestinal wall, if they rebuild the wall they can eat gluten once again without any immune difficulties. Unfortunately, for those who are unable to eat gluten due to genetic issues this is not applicable. You are quite right to point this out for those who rebuild their wall and still find they are unable to eat gluten.
100% of ALL Leaky Gut Syndrome caused food intolerances are cured when you repair your intestinal wall. If you still find you have an intolerance after you have repaired your intestinal wall then you are then in a position to know that you have a genetic related disorder. This is why it is so important to repair the intestinal wall, as it either cures you, or alerts you to a genetic disorder, and this provides you with a clear unobstructed view of what you have to do to get healthy again, which afterall is the only issue that is important here.