[burnerburnito]

What type of art can exist for someone who's blind, deaf, unable to taste or smell, and quadriplegic? (Edit: additionally, does this exclude music as a whole?)

Those with more than one disability don't have the right to enjoy art? The right to force you individually to accomodate them in everything you do regardless of if you know them or how few of them there may be?

By your metric there, might I accuse your own post here? You didn't use language that someone sufficiently mentally disabled could understand, so you've just excluded their "right" to appreciate and understand what you've written. Perhaps a limitation of this platform, but it'd sound like you're enabling that same ableism, not to mention that you could attach links to pictograms and videos to try to enable those who cannot understand language.

What is such an accusation of "Ableism"? A denial of differences in ability? A belief that if even one person somewhere can't achieve something, that nobody anywhere should, however mundane?

It's one thing to discuss designing our public streets to accomodate people on wheelchairs, of whom there are many and the benefits can also aid cyclists and even just people wheeling cargo on a dolly. Or to design public buildings to have small accomodations as such where they are trivially inexpensive and will remain for the life of the building while often providing benefits to everyone. Yet should it apply to all aspects of life everywhere? And what defines the limits? Exclusion of 1% of the population? 0.1%? A single individual?