Yeah. I lived in a city that's close to 20 percent Muslim for a while and ate at a few halal-only takeaways, but even there they were very much in the minority. (There was a fairly good place that not only served only 100% halal food, but also closed during the day during Ramadan, but that's because it was a non-chain outlet owned and run by observant Muslims.) Similarly, at least one of the major chains of budget supermarkets around here has loose peanuts and other nuts and just puts a warning in the window expecting anyone with a nut allergy to shop elsewhere. Most of the disabled people I know would probably have more than a few sharp things to say about his argument that they'd automatically be accommodated everywhere too.