Hi! I'm an Allergy/Immunology resident and I would just like to clarify some things you said in your article.
You said that "a food allergy is fairly easy to detect/diagnose as it only takes a few seconds to minutes to see an allergic reaction occur when you eat the food that causes your reaction". While this may be true in some cases, in a lot of them it is a true diagnostic challenge because the reaction is not always that immediate (it can take up to 6h to develop); also, people can eat dozens different foods in just one meal, because that includes all the ingredients they contain, even at a vestigial level.
You also said that "It is usually developed when you are a baby as well, also making it a little easier for you to know what you can have and what you should stay away from early on. Parents should use this as an advantage when their babies start eating solid, to try different types of food." This makes it look like it is not a big deal to have a food allergy as a baby/child, which is definitely not true. To the parents, it is a tiresome job to always make sure that your child will not eat something that may trigger a potentially fatal allergic reaction. Even if they don't eat the food, it may be an ingredient for another seemingly innocent food. They have to become masters at label reading. A lot of the times they need to provide safe alternatives to when the child goes to birthday parties or when they eat out of the house. And they need to explain over and over to the people around them that they cannot give the child any food without being sure that it doesn't contain the food the child is allergic to.
Also, it is definitely NOT harder to diagnose a food intolerance (in the vast majority of the cases).
On a more personal note, the symptoms you describe in yourself ("gagging or have that sick feeling and its like it becomes harder to breathe and something is stuck in my lungs or throat so no air can be taken in or out for a few seconds") are not suggestive of a food intolerance, so I suggest you consult an allergist.
To end, and emphasising what you said, a food allergy is a pretty big deal and, unlike a food intolerance, can be life threatening.