Your original comment compared full-sized standard vehicles to mobility scooters. No where did you mention (and still haven't clarified) how you get around having to be prone at all times. No, it's not "ableist" to take what you say at face value.

Nice assumption, but no I can’t afford a car either. I swap in my disability benefit in for a car on the “motability scheme”. It leaves me with a whopping £100 a week to live off of. I could have an electric scooter instead but I have nowhere to store it and it’s not suitable for someone so vulnerable to the cold. My car is a self charging hybrid. I would love an electric car but I rent a flat - there’s nowhere to charge it.

This all is based on "what is" not "what can be". I too live in the real world where I still share a car with my spouse, but I also advocate for the future I want to see, where we can rent/carshare a few times a year. This conversation is not about the status quo, but the potential of our communities.

If you were provided an accessible flat with a place to store a mobility device, less of your income would go towards transportation.

My point is not moot, because manual wheelchairs can fit into the majority of places. I cannot just walk in when I arrive, I need my wheelchair.

So you ignored my link about microcars. The video shows one with the seat removed and a ramp to allow a wheelchair to be ridden straight in and out (here's it queued up for you).

Let’s focus on the people that can walk and cycle instead of the small minority of us already penalised by society for having the misfortune to be sick or disabled.

You're reduced to "£100 a week to live off of" because of cars. Urbanists don't want to penalize you for having the misfortune to be sick or disabled, they want to enable mobility for all, including the elderly and disabled. You're just too stuck in car-brained thinking (and while it's not the US, London and Birmingham are exceptionally motornormative).