Most top players, other than the generational superstars, who start their careers at 18 have modest first years. It's not an issue. See how Joe Thornton did, for example. If they have strong character, they don't "lose confidence", they learn what works in the NHL and what doesn't. And they can't learn that in a league two steps down like Liiga in Finland. Nor the AHL, even though it is better than Finland.
Well Thornton is not Kotkaniemi, and vice versa, so it doesn't matter what Big Joe did. Nobody argued there was no precedent for an 18yo to be in the NHL, so not quite sure what your point is.
Kotkaniemi was 17 a few months ago, his ''character'' is forging and any human at that age has shaky confidence. So, are we going to play russian roulette to test the character of our best prospect during a rebuild year where we really don't have much need for him?? Why the hell would we do that?
He's just barely turned 18, he isn't going to change much of anything for us, it's okay, he can get an extra year in lower leagues.