Desision maker used ability to drive to disallow points

I have just had my pip review. Nothing earth shattering. Maintained standard care/enhanced mobility as have done for many years. I only had a paper review which was great but the Points given seemed a copy and paste from last couple of reviews despite significantly more medical evidence and also a diagnosis of AUD and combined ADHD. I would have expected to score in a couple of other descriptors, ones they have always ignored in the past. I always get a 3 year review, this award was due to expire in nov 26 but i sent back my forms in march 26 and was awarded the same month so basically a 2 and a half year award.
I phoned the DWP and asked if there were any officer notes I could be sent so I could understand my award further as I felt nothing I had sent in had actually been read.
We had a long and informative chat and I was told that the fact I could drive limited the points I could be given. She said basically that anyone who drove should not really be entitled to the care element. I challenged this and said I can drive maybe 10% of the time and as an intelligent person I do not drive if I think my fatigue is a risk. I told her my current 2 year old Motability car had 854 miles on the clock and my last mobility car which i kept for 5 years had less than 2000 on the clock when i changed it. I challenged her as to how my ability to drive 10% of the time was an indication that I could manage money with no difficulties when for the last 25 years i have used a managed bank account to help budgeting. How my ability to drive helped my extreme social anxiety, and the fact I need someone I trust with me to socially engage face to face. These problems have always been listed on my review forms and always been ignored but I felt now I have been diagnosed with AUD and combined ADHD at the age of 60 and I felt the information on my diagnosis reports should have been noted and a slight increase in points even if I didn't get granted enhanced care would have been proof my documentation had been read.
I am purposely not saying my other conditions here as I do not feel relevant as they are the ones that have always given me an standard/enhanced award.
I have put in for a mandatory reconsideration on the grounds I do not think my information I enclosed with my review has been read and challenging that driving 400 miles a year and only on very good days, sometimes not for months at a time should be factored into their 'she can drive so we are limiting her award'. Yes I have a Motability car and yes I do have a driving license but this bares no relevance in my care due to the limited milage. There is no one else on my insurance, I live alone. It is a bit of an overspend to bother having a car but my mobility is so limited I have no other choice.
Quite frankly if I didn't have a mobility car they would have been none the wiser on driving ability.
I know with reflection I should have done a full paper mandatory reconsideration myself but it just seemed unnecessary based on the driving being what had limited my points.
What I would like to ask is has anyone else been told that their ability to drive limits what they can be awarded?
I must point out that the driving I do is within a 2-3 mile radius of my home and maybe 2-3 days a month.

Is there any current case law on driving limiting awards?

I would be grateful to hear about the experience of others.