It seems to me that you are determined to disagree with everyone here who responds to your posts. So now it's the taxpayer you are concerned about?
My assessment took over 2 hours. You've already been told what's involved in carrying out those assessments. They require time, specialised skills, submitting reports, travel.. Would you want someone who is unskilled doing this job? I'm sure you would be as vocal about that as you are being here.
Can I also remind you that not everyone believes what they are told by universities or any other organisation for that matter. At 68, I have enough know-how about me not to believe everything I am told. I have taken on a few organisations in my time- the NHS, housing authorities, education departments, the Catholic Church, and I have got satisfaction each time.
I consider myself fortunate to be able to access the Disability services from my university which have not only supported my learning but also in my personal life.
Why should the cost matter to you if you are not covering it personally?
It seems to me from your posts that you have been able to repeat study more than once which is a choice not open to many.
It is insulting to those here who have advised you and given you factual information regarding your query, that because they won't agree with you, you claim they don't know what they are talking about.