things like brake force, etc, but those can easily be changed for cars of specific ages.
Agreed. They could be changed. But where is this documented? Does somebody need to write up a document giving the brake force of cars of specific ages? It's not just the age. Also the make and model. 1978 Mercedes W116 had ABS. BMW didn't get ABS till almost a decade later.
Even more modern cars. How many Z3's have failed MOT and gone to SpursFan just because the MOT tester didn't know that the outer sills are not structural. There could (should?) be a document that pops up explaining that to the tester when he/she brings up the make model on his computer.
We live in an age where people are not taught to to know stuff. They are taught to fill out tick boxes on a form. The reason is that the 'person' can't be held responsible for anything. He/She just needs to say 'well, I filled in the form and Computer Said No (or Yes as the case may be). Nobody, except us older folks, actually wants to decide anything using their own brain.
I have (had?) a 'C' issue with my prostate. Went to see the (very) highly paid specialist and he gave me my gleason score, likelihood of successful op, life expectancy with/without treatment etc. I asked him what the score meant and how he'd arrived at his findings. He turned his computer monitor round to show me and said "We put the test results into this form and it gives us the score and what to do about it".

He'd already asked me what I did for a living - software engineer I said - so I think he was bragging about his new fangle computer app that, to be honest, looked more like something I knocked up 40+ years ago on my ZX81. Of course I just smiled and nodded. Didn't want to offend him because he's the guy holding the knife.