I get what he is saying and it sounds like he wants to protect him more than anything else and enjoy him at his very best for as long as they can.
Personally, I don't see that as such a bad thing and I'm sure many of the people who are critics of this campaign would likely do the same thing after 40 years in the game and probably countless horses that didn't make it this far or got injured before they could. Heck, I would have scratched him out of his last race, but they still ran.
For anyone who didn't see his much talked about work:
https://www.youtube.com/watch?v=CsYIsbO4kVE