I have no problems with players like Cousins, Marchand, Lapierre, etc. who don't answer the call. This isn't the 70s, 80s, or 90s anymore. The game has evolved, and it has introduced the role of the "superpest".
As long as he's not a distraction to our team, I say more power to him. Players rarely have to answer for their actions in the modern NHL by dropping the gloves.
That video you posted would be an example of him being a distraction to his own team. So, yes, he's going to have to grow up, but if he can find some maturity while keeping his skills as a pest, I'd welcome him on our fourth line given that he's got some skill in his game too. But as for him not fighting, I really couldn't care less. Fighting is being phased out of the game. I don't care if he doesn't want to drop the gloves.