The core idea at play here is that the United States has decided that it wants to be a society where disabled people should not be significantly barred from leading as normal a life as they can, modulo their impairment(s). Internet services have become a key part of daily life, and so a pharmacy being accessible to disabled people is in the same category as it being wheelchair accessible. If you disagree with it, then try to get the law changed or move to another country.
