Not sure what OP's #1 sport, is but it may not be hockey.
Judging NHL players' career arc, by their age 19 or 20 seasons, is indisputably unreliable
and Rangers don't need to look far to be confident it may be worth the wait, see these 6 examples among their top players:
Panarin - undrafted in'10,'11; in KHL thru '14-15, joins NHL as he is turning 24
Fox - drafted in '16, joins NHL after D+3
Shestyerkin - drafted in '14, stayed 5 seasons in Russia, came to NA as he was turning 24
Zibenajad - drafted in '11, had 1st 20 G season at D+4, first 50 point season D+5
Strome - drafted '11, despite being 5thOA, spent next 2 seasons back in O, had breakout season D+4
Kreider drafted '09, D+1 thru D+3 at BC, first really productive season D+5
Kakko and Laf are doing their development in the NHL,
but their value remains in what they will become, not their counting stats before turning 21
out-of-town fans want to compare them to other recent top pick Fs,
but most of those guys didn't join teams with 5 star F's ahead of them on roster, and hardly any PP time
NYR are confident in their potential and have no urgency to make foolish too-soon moves