What confuses me about this is the league initially investigated and determined that there would be no punishment for Ottawa back in Mar 2022. Then, a year later they've re-opened the case and found that Ottawa/Dorion straight up lied about it.
The whole thing doesn't make a lot of sense since if Dorion told the NHL that the List hadn't been submitted, when in fact it had, it should have been identified the first go around in 2022 and we'd have been punished way earlier.
The only explanation I can think of is that the league initially were lead to believe this was all just a clerical error by Ottawa and decided they couldn't come down hard on it, only to re-open the case and after interviewing people involved decided it was an intentional act by Dorion to lie. But, that begs the question, why didn't they investigate more thoroughly in the first place before absolving Ottawa in 2022? And why wouldn't Ottawa be on the hook for a clerical error?
The fact that the league operated on the honour system when it comes to tracking NTC lists in the first place was a giant failure by the NHL. There is ample examples of teams "cheating" to get an advantage. If Vegas hadn't tried to trade Dadonov, we'd have "gotten away with it". We have no idea how often this may have happened before and just not been caught.