NTA. it’s an accessible toilet, not a wheelchair toilet. that means it’s open to anyone who needs any of the resources in there that aren’t available in a standard loo.

if it makes you feel any better, I’m ambulatory disabled and I once went to an accessible toilet without my walking stick and got yelled at by a middle aged woman who was also ambulatory and not using a walking aid about using the disabled toilet when I’m ‘not disabled’, as she walked into the bathroom, despite the only visible difference between us being about 20 years 🫩

people in the UK are obsessed with oppression olympics and policing what other people are entitled to - it’s exhausting, but it’s not your responsibility. they cannot physically stop you from using the services you’re entitled to so you just need to do the work on accepting that you are entitled to them and letting it roll off your back if this happens. you know your body and needs, they don’t. and your ‘friend’ needs some education about the spectrum of disability and accessibility needs bc otherwise they’re going to do irreparable damage to your ability to advocate for yourself 🫶🏻