The more things change, the more they stay the same.No, I think he's wrong.
Boomer's comment was based on his comparison of the demands on footballers now compared to when he started. It's so much harder now, ergo it will be so much harder for modern players to play as long as he has.
However, modern players come into this system only knowing this system. It is their benchmark, like the 1996 system was Boomer's. I'm sure the old stagers still playing in 1996 would have said it was much harder then than when they started too. This year's draftees who play 10+ seasons will probably comment at the end of their careers how much easier is was in 2015. And so on.
So there's always going to be a small handful of players who manage to combine avoiding serious injury, not being susceptible to soft tissue injuries, have undiminished passion for the game and are able to play at a consistent level year after year. Playing consistently in a top team that plays lots of finals helps too. And a small handful of that small handful will keep that going until they get somewhere near the mark.
I couldn't say who if any out of the current crop might get there, but I'd be very surprised if it didn't happen again.