In all the years I acted as a Benefits Advisor, I never came across any fraud.
AA goes nowhere towards paying for the kind of help people need, which for many is somone standing outside their door all day, waiting to come in at a second's notice to give the help they need. If they spend it all on a carer it will barely buy half an hour's care in total - that is if you can find a carer, they can be as rare as hen's teeth.
The other point many are ignoring is that AA is given to support mental care as well as physical and many of the things that some posters are being so censorious about are activities that support the mental health of the recipient.
I had a client living alone who could not leave the house except by taxi. She got out once a week to meet other people at a social club, except if she had a medical appointment, and had a taxi, she couldn't afford a taxi for the social group as well - as her medical appointments became more regular, and she rarely got to the social club she was getting lonely and depressed. AA meant she could have 2 or 3 taxis a week and keep her limited social contact.
AA cannot alleviate pain, cannot help someone renew their previous life, cannot pay for the amount of care someone actuaally needs, but it can provide little comforts and pleasures that help alleviate the painful, lonely and limited life many disabled people live.