this ch4 interview (skip to 11m50s) of an activist with cerebral palsy juxtaposed against a healthy representative of 'sad' young adults tells you everything...
but I'll spell it out anyway: the massive expansion of mental health diagnoses (based on culture not science) has given cover to idiotic politicians to cut benefits for real disabled people.
https://m.youtube.com/watch?v=mASG65zEhBQ&t=710s&pp=2AHGBZACAQ%3D%3D