I Google'ed "Jesperi Kotkaniemi falling down" and got zero hits. What is all this talk about him "falling all the time?"
Jesperi has had a tendency to fall easily when changing direction quickly. More about his skating technique than anything else. And that can be taught even in his age (Barkov took lessons with a figure skating coach in his draft +2 and 3 off-seasons... might remember the years wrong).
Jesperi for sure wouldn't have benefited staying in Finland his d+1 season. Ässät was a tire fire that season. And he did have good season in the NHL, learning all the aspects of the game there. Then a knee surgery the first off-season, bulked up a bit too much (and didn't get to skate much) and he didn't have legs at all. Should've been sent to A a lot sooner then, maybe even scratched totally in order to be able to skateskateskate.
All in all, I don't see the early start to be a negative thing as he wasn't just surviving. Sheltered? Of course, but playing well in that spot. But I think the management, like some fans, forgot that he was always supposed to be a long term project. It's like they didn't have a plan with him or they ditched it after the good start.
Jesperi is not a complete player and as long as people remember that, I think everything is allright.
Must say that I am expecting a bit stronger season than the last one, but he had quite short off-season after a long play-off run (and he played in Finland before the season started in NA).