I manage a car repair shop. I have watched many customers grow old.
Once the hearing starts to deteriorate and we loose the fine muscle control necessary to co-ordinate clutch and throttle pedals, all the explanation in the world won't help.
Obviously, some older drivers never lose it, but more do. Some had little finesse when they were young. "Rev happy pappy" is a term one of my mechanics used to use.
I remember one guy, a farmer, who said my car 'just stopped'. He had got the flywheel so hot, that apart from the overpowering smell of burnt friction material, it had cracked through and the starter ring gear had fallen off.
I don't recommend automatics to older drivers who have driven manual cars all their life. They tend to have 'run-away' accidents, often resulting in death or injury. I once had to recover a Jaguar that had been buried up to the boot (trunk) in the side of a hotel, it hit four other cars on the way in and that was just a parking accident.

Ho hum, that'll probably be me in few years.