Has there been a sudden upsurge in allergies?
No, it’s a “fad” and seen as “trendy”, reading any of the difficult customers in restaurant threads will tell you that, people make a big song and dance about not being able to have gluten and then will happily chow down something that unbeknownst to them contains it (because of course they’re not stringently following a gluten free diet enough to check and make sure).
As mentioned correctly by PP. Celiacs is a disease, I’ve only met 2 people that I “know” have it, (niece and ex manager), niece will sometimes think “fuck it” and have a pasta dish as she really likes it, but knows she will pay for it after (I’ve seen it).
Ex manager used to be practically in tears at the cakes, biscuits etc that were forever going round the office and she couldn’t have them (and would NEVER take them). She also said the odd occasion she’d have a pie sandwich as she loves them, but always knowing there is a price.
People are free to follow whatever diets they wish, but the ones that irk are the ones who really seem to make a song and dance about not being “allowed” gluten (I get some are genuine, but in the 2 above cases they don’t make a song and dance).
Me, I’d never follow a GF diet, I’m surprised I’m not a loaf of bread, I couldn’t give that up and would cry my eyes out if I had to.