I guess it isn't important unless you're the parent of a child who has the allergy---and that would change your opinion PDQ.
My cousin had a child with the allergy --first time I ever heard of it--and it was horrible--because peanuts are in many things that kids eat. And it is life-threatening at times.
I have friends who have a new two-month-old who has been diagnosed with a metabolism disorder that will require medication and diet all her life. I told the parents that it could be worse--she could be allergic to peanuts. They agreed.
It is the parents duty to take care of children who are unable to care for themselves. I know several parents who claim their children are so allergic to peanuts and could die if they come in contact with a peanut skin. One day I say one of those children eating peanuts. I figured I would need to help her use her epi-pen but she had no reaction. When I asked her about why she was eating peanuts which her parents had banned from all local gatherings because of her condition she confessed that by claiming she was allergic to peanuts she was fed a special diet at school that excluded peanut butter which she does not particularly like. That convinced me that the 300 percent (or whatever the bogus figure is) rise in peanut allergies is nothing more than a self-designation.