I have direct experience with this and it is indeed a miracle. What's interesting is that the protocol largely emerged outside the regulatory channels, with a handful of doctors worldwide developing it once the science became clear that exposure could help and more and more offering it to patients every year. These allergists have carefully figured out regimens that work and it can take a year of daily dosing, with dose sizes increasing twice monthly, until one can safely eat, say, a handful of peanuts.

There's still today another camp: Many allergists still preach avoidance however and put fear into worried parents about the dangers of oral immunotherapy.

Because it can be hard to find an office that will run your immunotherapy program for you, or costly if you do, many parents are doing it on their own, following dosing protocols they find in Facebook groups or on YouTube. The ones I've seen have been supportive and helpful, not quackery.

Meanwhile the medical establishment is finding ways to monetize this immunotherapy by turning, for example, peanut doses into pharmaceuticals, e.g. Palforzia, which is a recently FDA approved "food allergy treatment" and is in fact simply peanut protein.