I wonder what would happen if an injury was to occur.
I wonder what would happen if the strata committee was threatened with a complaint about discrimination. The Discrimination Act 1991 (ACT) covers discrimination on the basis of disability and age, in areas such as access to premises, provision of goods, services or facilities and accommodation.
You can offer them the carrot of a no-cost general meeting and the stick of a complaint to the Human Rights Commission. See what happens then.