The other aspect of the rhetoric stems from those who know nothing about disability deciding what is reasonable for disabled people to have access to.

In times of austerity, for example, it isn't reasonable for a disabled person to expect to be given funding for a 'luxury' wheelchair.  They need to slim down just as everybody else has to.  

The fact that a chair tailored to the body of a disabled person and to the disabled person's requirements (and those of their carers) is critical for quality of life, and to enable carers to do their job properly without putting themselves or the disabled person at risk of injury, is obviously by the bye.  We're all in this together, don't you know?