The thing that probably went unnoticed is that this past season was the third time in OV's career when he did not lead the league in shots (came in 3rd after MacK and Kane). The other two times were his wrist injury season (16/17) and his down season (11/12).
Ovechkin was always a volume shooter and that's how in the past he fended off all high-percentage contenders having a career year. He just kept putting the puck on the net, and he did not need to be luckier than them, the law of large numbers was on his side. This season he needed to post his own career-best shooting % to win the Rocket by a single goal.
So the current, 33-year-old, Ovechkin is finally mortal among mortals, and from now on he will need some luck to win (or some bad luck of the other contenders). I think luck will bow his way one year or another, he will be in the running for 2-3 years more, so I voted 9. Though 10 would indeed be nice to see.