In the present day, many countries in the world, specially the governments of the western countries are committed to giving equal access to all people for all public buildings. It is specially so for Assembly buildings such as churches and temples. They have developed accessibility standards under Accessibility for People with Disabilities Acts, and no changes can be made to existing places of worship, or when building new ones, without providing universal accessibility.
New amendments have updated requirements for accessible seating spaces provided in public assembly buildings like churches and temples, enabling people with disabilities to equitably and independently access such and have equal rights to all worship opportunities. In addition, new requirements address adaptable seating spaces suitable for a side transfer from a wheelchair, as well as storage spaces for wheelchairs and other mobility assistive devices. Accessible and adaptable seating spaces are also required to be distributed throughout viewing areas.
Even if such facilities are not provided older temples, there is no way that a Buddhist Temple would knowingly mistreat a handicapped person. It is because of our understanding that one is born handicapped due to a strong kammā seed that was generated in a previous birth, and that they are not to be looked down upon, as we too have been this way in this samsara.
No one can avoid such vipāka, and when one is born handicapped, one will have to live the whole life that way. It is the kamma vipāka, why some people are born handicapped; some have healthy bodies, beautiful bodies, ugly bodies, and a healthy person may die suddenly too; the varieties are endless. These include those having low IQ, those who are blind or deaf at birth.