Was Ovechkin "on the cusp" this past season? If so, you will probably find a good amount of people with 10 seasons falling under "on the cusp or injured" among those who are currently playing or just retired (Malkin, Datsyuk, Thornton just off the top of my head).
I personally think that Ovechkin was not "on the cusp" in 15/16, 6th best finish in Hart voting is a bit too far to make an argument he was the best that season. But then so was not Crosby, neither in 14/15, nor in 08/09, nor in 05/06. If you take out his seasons that were dramatically shortened by injuries (07/08, 10/11, 11/12), we are essentially left with five seasons Crosby was the best or close (06/07, 09/10, 12/13, 13/14, 15/16). The same is true about Ovechkin: five seasons out of eleven he was nominated for Hart (07/08, 08/09, 09/10, 12/13, 14/15) and won it three times.
So what is the difference? The extrapolations from the three seasons Crosby did not complete or barely started? After the past two seasons, I am even less inclined to buy that. Up to 2014, the people doing the extrapolations at least had a leg to stand on, "Crosby has not been under ppg for a prolonged period of time". The past two seasons gave us ample evidence how prime Crosby can be well below ppg for dozens of games (someone counted that his under-ppg streak was almost at 100 games). So by now there are multiple examples of prime Crosby's actual performance you can add to either 07/08 or 10/11 or 11/12 and get a season that would not have deserved a top5 Hart finish, let alone a nomination.
How does that square with what you said in the post before that, "It was fun to debate for the first years of their careers when it was actually debatable and close."?
So Ovechkin was "easily" better for three years out of their first five (your words), he won Calder over Crosby in a convincing fashion in their first year (124 1st-place votes to 4 1st-place votes for Crosby), and yet it was close over the full five-year period? I know back then the media was trying to spin it this way, for the lack of a better story ("NHL is dominated by Russians" rubs too many people the wrong way even if true, as it was in 2007-2009). But now we do not have to pay attention to that, we can just accept the fact that Ovechkin was a tier above Crosby in their first five years.
I think you just got tired. If a good amount of people around said the sky is green, you would start seeing a greenish hue in it, and everybody would. Arguing with people who constantly come up with something "Crosby has been the best for 11 years", or "every season he is among the best", or "he is a top5 goalscorer of his era", or "he always comes up big in big games" is tiring, and you end up just accepting things like that as facts, even if you would not if you really analyzed those statements.