Yes, but we also have to consider that today's 60 year olds didn't grow up with the same types of video games (if at all), and video games didn't have the same profile that they do now. The 40ish players in the FGC - they all grew up with the genre of the game they play.

I would not be surprised if the 20-something pros in stuff like FPS games would still be quite good at them when they hit 60-- provided of course, that 1) life doesn't get in the way, 2) that they still playing the games regularly, and 3) that the genre even still exists at that point.