Jealousy I imagine....some people seem to think that if they don't have / can't afford one, then they must be rubbish, and do the best to put them down. I'm sure Sigmund Freud would have a theory.....
I have to fly this plane from time to time, it's all I have, wishing I had a D-jet, or , even better an Eclipse or Mustang

But it's great, really a step forward. And very usable to go places.
And don't forget the parachute issue. The "Real pilots don't have / need one" argument.
Except for the military ?
S.