What Boucher becomes at the peak of his career will determine whether or not he lived up to the 10th overall selection. He has the raw tools of a high end power forward and was taken in a very similar range to where other power forward prospects with similar tools were taken.
Here are a list of power forwards that were taken within a similar range:
Chris Kreider 19th overall 2009 NHL Draft,
Gabriel Landeskog 2nd overall 2011 NHL Draft,
J.T. Miller 15th overall 2011 NHL Draft,
Tom Wilson 16th overall 2012 NHL Draft,
Bo Horvat 9th overall 2013 NHL Draft,
Alex Tuch 18th overall 2014 NHL Draft,
Lawson Crouse 11th overall 2015 NHL Draft,
Josh Norris 19th overall 2017 NHL Draft,
Brady Tkachuk 4th overall 2018 NHL Draft
Those power forwards are all very valuable players and what they eventually became justified their draft position. If those players ended up having a meaningful decrease in production as opposed to what they actually produced, they would still be valuable but, people would be much more critical of their draft position.
Boucher has some similar attributes to those power forwards listed above. Some of them may have demonstrated more at a similar age but Boucher was a raw prospect who hadn't played as many games and was drafted in an abnormal underscouted draft season. If Boucher is able to successfully put his tools together, he has the potential to be right up there among those other power forwards listed. In that case he will justify his draft position. If his peak production is meaningfully lower than the above listed players then his draft position will be criticized in the same way those other players would be if their peak production was meaningfully lower.
Boucher demonstrated some very good things in preseason so let's see what kind of steps he can take this season. There are good raw tools there and now it is just about being patient enough to see what he ends up getting developed into.