It increases the range of options for sure, but it also dilutes how seriously people take it.
Back around when the gluten free thing started taking off, I worked at a local pizza shop, and we started carrying a gluten-free personal pizza.
The crust came frozen, wrapped in plastic on a disposable aluminum pan so it wouldn't come in contact with the oven, and there was at least some effort to make sure they were using a different bucket of cheese and sauce and such to minimize cross contamination
But the truth is, I'm pretty sure just the air in that pizza shop probably had measurable levels of gluten, flour got everywhere because we had guys tossing around pizza dough covered in high gluten flour. If someone had a really serious gluten intolerance they probably shouldn't have trusted anything in our store except bottled drinks, and I worried a bit about someone getting lulled into a false sense of safety because we advertised a gluten free pizza.