Yeah, and aren't like all high goal scoring seasons statistical aberrations? What is the probability of a player that scored 40 goals to score 40 goals again the following season?
None of the 40 goal scorers in 16-17 repeated in 17-18. None. None of the 40 goal scorers in 15-16 repeated in 16-17. AO had back to backs in 13-14 and 14-15 and 15-16. Then Stamkos is the next repeater with back to back 40 goal seasons in 09-10 and 10-11.
Its not like someone making the wild prediction that William Wild Bill Karlsson won't repeat his 40 goal season have reasons to sleep bad at night...
Looking at production analytics should look at average output over 2-3 years. Its worthless to have any expectations for single seasons. Of course there are exceptions, but production in hockey is very very streaky.
How good is it to look at top 10 in scoring one year to predict out put the following 5 years? Lets say you are scouting free agents. Take any year in recent history (2013 or older) and then produce the standard deviation the coming 5 years. I would fall off a chair with surprise if it didn't top 20%.