Assuming you believe everything you just said means that the following players have dismissed values as well:
Boqvist, Hayton, Zadina, Kravstov, Bouchard, Walhstrom, Dobson, Denisenko, Kaut, Foudy, Miller, Alexeyev, Sandin, Dellandrea and Veleno all carries little value because they haven't been able to secure a top 6 or top 4 role in the NHL before 21 years old? That's absurd. Most of these guys carries a lot of value (See Boqvist who was the main piece in the Jones deal) - and by the way, all of them are older than Kotkaniemi.
Also, if, in your opinion, Kotkaniemi carries little value to (some) GMs, wouldn't it be fair to say the same about Newhook? After all, he's less than 6 months younger than Kotkaniemi and he hasn't been able to produce at the NHL level yet despite some decent (equivalent) ice time to Kotkaniemi and his PPG in the AHL at 20 is barely better than Kotkaniemi's at 19. Do still think a bunch of NHL GMs think Kotkaniemi or even Newhook carries little value around the league? Because from what I understand and what I have seen from your own posts, you see Newhook as an untouchable who do carry a tons of value.