How are disabled EU citizens affected by Brexit?

In light of Brexit, many EEA citizens are attempting to obtain a permanent residence card to secure their status. Disabled EEA citizens who have never worked or have worked less than 2 years due to their impairment are often unable to apply for permanent residence card. Many of them came to the UK as disabled children with their parents or became disabled later in life but before they reached working age. Not only are they refused a permanent residence status, it also means they can’t apply for British citizenship because EEA citizens need the card to be eligible to apply for citizenship. In some cases disabled people have been refused access to benefits in the UK even after decades of receiving them. A permanent residence card would help them prove eligibility easily. Additionally, they are often unable to move back to their country of birth because they have no access to their benefits and health system or face other major challenges, often disability related.