The mitigating circumstance if I recall correctly was the lack of scouting due to COVID.
Not an excuse, given how much of a reach he was, but an explanation.
Not a lot of home runs in general that year, no?
Boucher has good tools and has demonstrated flashes of high end skill. One of the problems is that there is a big gap between his skill set and his production, a second problem is a consistency issue as the flashes of high end skill are not frequent enough.
One of the reasons why he was drafted so high is the premium the Sens placed on his physicality. Another plausible explanation is that the Sens may have speculated that it was simply an experiential gap that was creating the disparity between his skill set and his production and his consistency issues. The Sens likely underestimated how difficult of a development task it was going to be to breach the gap between his flashes of skill and production.
It is interesting because Sens development coach, Shean Donovan was asked about Boucher on TSN1200 at the start of the season and he seemed quite optimistic about what Boucher could become. He said something along the lines that Boucher is the kind of player that will break into the NHL as a 4th liner and then the skies the limit for what he could become. Interestingly enough he seemed more optimistic about the upside of Boucher than Ostapchuk who he said could become a Nick Paul kind of player for the Sens. Ostapchuk has certainly demonstrated more clear signs of development than Boucher has since being drafted so it is interesting that Donovan would say such a thing.
My guess is that Boucher demonstrates quite a bit of skill in drills and various types of training sessions. That this leads to an optimistic view of what he could become. But at the same time it creates the perplexing question of why there is an inconsistency in those skills and why is it not leading to more clear improvements in production.
Based on McKenzie's rankings at the time of the 2021 draft, Boucher was expected to go somewhere from the tail end of the first round to mid second round. It is a more reasonable spot for a prospect who demonstrates flashes of ability but needs a lot of development.
Boucher has a lot more skill than people on here give him credit for. Maybe his production ends up surprising people down the line and he ends up being a high quality middle six forward. The issue with that is that if it happens, it might end up being over a time frame that is similar to that of a late draft pick or undrafted player. There are plenty of players that surprise people as to what they become in their mid to late 20's.
It seems like for high draft picks though, that it is less of a concern of what they could eventually become and more of a concern about what age they reach that potential by and how certain an organization is that the prospect in question that will reach that potential by that age. That might be heavily influenced by managing contracts. It is certainly preferable to have a player produce like a top six forward while they are cost controlled on their ELC.
A prospect becomes waiver eligible relatively quickly after their ELC ends. Shortly after that the player in question gets arbitration rights. Then by 26 they gain the right to be a UFA. Because of those factors if a player somehow becomes elite in their late 20's that organization may have already lost them via waivers, gave up their rights because of an arbitration hearing that they didn't like or the player may have walked away from the organization once they gained UFA eligibility.