That is not what anyone said. Why does everything always have to be extremes? The veterans can be very good players, but not be elite/untouchable. And wanting to see the kids get an opportunity when they're struggling is not the same thing as calling veterans "ordinary."
Kreider is a very good net front presence. He scored 52 goals last year. Adam Graves scored 52 goals once, was a great Ranger, but generally was good for 25-35. Kreider is probably good for 35 this year. There's no reason if he's sucking or ineffective, Lafreniere or Kakko can't get a look in that spot.
Trocheck is above average at faceoffs, and only once has exceeded 60 points in his career. Most of his production this season has been on the PP. No reason Zibanejad can't take faceoffs and one of the kids can get a look in this spot when he is struggling or ineffective.
Zibanejad has been very underwhelming outside of the PP this season except now that he's been reunited with Kakko. If the PK is taking away his one timer, he's having a bad game, and Trocheck's having a good game, there's no reason you can't put Panarin at the top of the LW circle like he did when he first came here and where he's scored a ton of goals in his career. Trochek takes the faceoffs and a kid gets a look at the right circle in a more traditional umbrella setup.
The only person on the first unit who should actually be untouchable is Fox, and I'd venture he should be generally playing the full 2 minutes on the PP.