I am the coeliac mentioned by Crossover - I found out during lockdown... as if life back then wasn't difficult enough lol. It was miserable at first, but I've got used to having to double and triple check everything.
"Gluten free" is a protected term, so I'm always grateful to companies that go to the effort of declaring their food is suitable. I'm thinking of things like crisps - many brands are unsuitable for coeliacs as they are 'may contains'. It's also a nice surprise when you discover something is gluten free that you'd be sure wasn't - like KitKat Festive Friends, which have the logo on the front. However, it also winds me up when restaurants describe some of their dishes as 'gluten free' and then tell me it's unsuitable due to the risk of cross-contamination, because that's a misuse of the term. Or like at Everyman Cinema, who went overboard with the bottom-covering on their allergen menu and listed literally everything as being a 'may contain' - a disclaimer about the kitchen handling various allergens is more helpful than a check in every single box of the matrix. Things like this not only mean people with allergies often aren't catered for, but also make the company look stupid, quite frankly.
I don't think everything will become gluten free because it'd just be too expensive and it's not a worthwhile endeavour. I do hope, however, that more things become gluten free in the future - things that are 'ruined' by the smallest quantities of an ingredient: the biggest culprit, in my opinion, being barley malt extract. In small quantities it's actually classed as gluten free but many companies won't pay for the tests to label it as such (it has to be less than 20ppm, although many countries are far stricter with a cut-off of 5ppm).