Fans tend to overrate prospects.
Coaches of playoff contenders tend to be less patient with prospects, because mistakes cost games.
The AHL is where hockey players go to develop, not the NHL.
Rebuilding teams can live with young player mistakes, Not contending teams.
If you look at AV's record, he'll play good young players immediately, it's the marginal young players who get blocked by "favorite" veterans, which is typical of most coaches. And most coaches work in young players over a 2-3 year period, unless they're exceptionally mature or talented.
So he's no more a "veterans" coach than Quenneville or Lavi or any other established HC.