I realize that you're trying to make a point, but you just can't compare an 18 year old coming from juniors to all nhl rookies. At least 3-4 #1 picks from that time period went to AHL or NCAA after the draft, 2 were goalies and the #2 from those years either didn't put up many points or stayed in NCAA. Then there are guys like Stamkos who had 46pts (in 79 games) and Nash 39pts (in 74 games) which are not mind blowing numbers for a #1 pick either, but both became elite players later on.
Having watched all of Jack Hughes' games this season, I'd bet everything I have that he'll have a point/game season in the future if he stays healthy. Points aren't everything, a player might earn secondary assists without even contributing much. Hughes has been very unlucky, has hit the post bunch of times, assists to a wide open net only to have the shooter get robbed by the goalie or miss the net entirely. Ofcourse you'd want everyone to get into the score sheet immediately, but sometimes it just doesn't happen even when you're playing good. Let's at least wait this season through when we have the final numbers..