If this is on your record it could make a difference as to whether you would qualify for disability benefits too. I had a similar experience when I completed a telephone frailty assessment for my 94 year old mum - I have LPA for her as she has vascular dementia. When I viewed what had been written online much of it was incorrect, and as you’ve stated here, a lot of it I wasn’t asked about, and several very wrong assumptions have been made - I can only assume after looking at past medical evidence which is no longer relevant.
I rang the practice and asked for a further appointment to correct the information and was politely refused, so I insisted on a telephone appointment to see our GP, and was subsequently told that this is a standard screening for all patients over retirement age - I told GP in no uncertain terms that there was no point to these screenings if it was a one size fits all assessment and so many details about patients were wrong as a result. I was invited into the surgery and the assessment was done again. It’s hard work to get things corrected but persevere, and do as I did - quote the data protection act. All information stored on computer has to be correct and up to date, and if incorrect has to be updated within 28 days of being informed of incorrect data.