Maybe not quite as strong of a reaction, but go read the reaction many Boston fans had with the Svechnikov hit, even later on in the series and afterwards. Some were calling for outright dirty retaliation to injure him.
My point being that even a clean hit that injures a player can cause fans to not like the hitter because of it. I personally don’t hate Trouba because of his hit on Jarvis because it was a clean hit and one I’d want our players to make.
If others feel differently, that’s fine, I’m just giving my take on it. Not defending Trouba’s past history or trying to change anyones views of him, just giving mine.