Things like that just need to sink in. It is hard to imagine now how people who will have witnessed Ovechkin beating Gretzky's career goal record will view Ovechkin. It is even harder to imagine how those who become fans with the knowledge that Ovechkin is that star of the old days who surpassed Gretzky in one big thing will view Ovechkin.
Ovechkin's legend is like a huge mountain you have to admire from a distance. I doubt his 8 Rockets have sank in completely with most people including myself. "Who led the NHL in goals most times?" - I lived for too many years with the knowledge it was Bobby Hull. Ovechkin's Cup and Smythe definitely have not sunk in, the talk of Ovechkin not being able to get it done and take the team out of the 2nd round is still fresh in everyone's memory. The new generation of fans that have not heard this talk and became fans with the knowledge that Ovechkin has a Cup and was a playoff MVP has not yet arrived.
Ovechkin's legend will grow with time. As someone who have witnessed the debate about him in his peak years, I can say that his 2007-2010 peak and 07/08 season are now viewed more favorably than they were back then. The talk that Crosby was 1B in this period, or Malkin was 1B, and what about Datsyuk - all that stuff has largely stopped. Ovechkin now owns "best three-year peak since Jagr", and if McDavid has a flatter career arc and does not take it away from Ovechkin, just imagine what people would think 10 years down the road - "Ovechkin? You mean the guy everyone's peak play in the last 30 years is being compared to and fails to measure up?"
So, coming back to career goals - if Ovechkin gets to 895, every decade and every brilliant goal-scorer with multiple goal-scoring titles who will fall short by 200 goals will add to future fans' awe. It is impossible to imagine now the fan of 2050 and the image of the towering Ovechkin figure in his mind. And yes, there will be a difference between 897 and 887, though Gretzky/Ovechkin will be the double peak in career goals anyway.