I think what you are seeing here is that with a Mk7/7.5 certainly up until recently, the crowd here were people who could afford a moderately pricey new/nearly new car.
Those tend to be a certain age.
If you looked at who owned a Mk5 or Mk6 GTI on here, you'd find a different demographic.
This has always been a pretty conservative (with a small c) forum in my opinion, when people have asked about "i want a very loud exhaust" or "has anyone fitted a whale tail spoiler?" they tended to be gently advised we aren't hooligans.... well, most of us aren't hooligans ;-)
For the record, I am fifty something ...I always thought i was old vs you lot, seems I'm just a yoof
And maybe nobody is a boy racer with a GTD