What a generalisation the above is. When I was 17, I bought an MGB which I started to work on, but then my father gave it to a 'restorer'to finish, which made things worse than what they were. Now it's pretty much finished and all good with a number of different but period (where possible) additions. Again, another mate when 17 got a rotten Mini Pickup which he finished 2 years ago (took him 5 years to restore) which he got pretty much mint and original, down to the tyres (70s spec Dunlop Aquajets) and many trim details that simply are not available off the shelf today.
I didn't prang my car within 6 months of driving either. It took me 5 years to do that and a hideous week of work (my fault, I never drive in a tired state now), and again, majority of my mates didn't prang their cars either (one slid off the road as their electric steering decided to die LOL). As for what the stats suggest, it doesn't suggest that the majority of youngsters smash their cars up.
Another mate of mine had his parent's MG ZTT 160 as his first car for 3 years, again that was fine. There is a bit too much stereotyping present these days IMO.