Despite popular opinion, Stamkos' didn't use to need another elite winger to produce. Between 2010 and 2013-14, he averaged 2.47 points per sixty minutes (5 on 5) with MSL and 2.54 without. This year, he was at 1.69
What were Stamkos' stats with Kucherov this year?
1.06 PP/60 with Kucherov
1.90 PP/60 without Kucherov
But don't worry, guys, even though Stamkos' stats weren't better with MSL or with Kucherov, they'll be better with a player who has yet to play in the NHL. Why? *Reasons*
Again, between 2010-11 and 2013-14, Stamkos averaged 2.47 points per sixty minutes (5 on 5) with MSL and 2.54 without. Back then, you could have replaced MSL with anyone and Stamkos' statistics would not go down. But you want to claim his decline in production is the result of missing MSL?
Just one player was able to score 50 this year, and he's arguably the best goal-scorer (adjusted for era) to have ever played. Four scored 40 or more. Just one player scored 90 or more. But don't worry, Stamkos has "lenty of 50 goal , 90 point seasons ahead of him."
Do your own work on an aging chart. Good look with that subjective criteria. Keep in mind that plenty of players add high-skilled players when they get older, which should make things even out. But, nitpick if you must without substantiating your critique.