Since day one he has had success regardless of who or what line he plays in (which Todd calls out in the article I provided) - that would be impossible to do with a lack of chemistry. You really should read the article as it also addresses his passing and tendency to be able to make pass successfully where they should fail - with this also comes with passes that fail/turnovers.
But really - you say he doesn't fit and I get where you are coming from (he's not the typical Kings 2-way player) but the players and coach feel he fits with the team on the ice so I have to weigh their opinion with more weight than I would an outside observer.
Speaking about selfish - was it selfish for Doughty to sign a $11m / season contract knowing it would hamper the Kings ability to compete? I'm not saying it is, but seeking your opinion. Looking at sports in general, there is a reason Tom Brady was so successful, part of which was skill and part of which was signing below market value to ensure the team was able to bring in skill around him. Doughty signed realistically above market value during his deal, as has Kopitar - both of which are leaders of the team.