Is it really that odd?
First, the Jets aren't a contender, hell they're barely on the fringe of fringe playoff teams. So the youth is beneficial to their system.
When I say we're losing out on a top winger, I'm taking into account their playing style. Kyle Connor has an elite level shot, is great at finishing on one timers and in general has a great nack for the back of the net. This is a player who outproduced Dylan Larkin at the same age in college hockey. I know many people use this website as their database for prospects, even though they haven't updated Connor at all since being drafted. Prior to Laine's arrival, Connor was the best prospect in a prospect pool widely considered one of the best in hockey.
Also, you phrased it as if the trade was one for one. Losing out on a potential top winger AND a current Center who fits into the first line/elite 2nd line category. Bryan Little has provided SIMILAR offensive and defensive output to Stone the past two years.
If those two are the basis of acquiring Mark Stone, I don't think a team in Winnipeg's position with Winnipeg's needs should consider it.