That is pretty cool that you were there. I can't speak for that but Manning's decline started the day that Elway took the offense away from him. That day was after the Rams beat Denver in 2014. Sure his body is failing but he hasn't been able to rely on his mind as much since that game. If he does decide to come back and play he will only do so if he can do things mostly his way.
I don't think it's the system that's causing the problems. Manning might be able to get with the Rams and design the perfect system for his limited skill-set but even with that, I think the days of him being a quality starter are over. I think the best you can do is design a system where Manning (with his new mindset) plays the role of a game manager. It might work. But I don't know. He looked so done in 2015. I don't want to see the guy fall on his face in 2016 with the Rams. He's one of my favorite players of all time. I don't want to resent him in 2016.
Yea, my grandfather had tickets to the event. He offered one to me. I jumped on it. Wish I had the chance to meet him. Much better speaker than I thought he'd be. Funny guy.
The theme of the speech was adapting leadership to changing environments. That's where the context comes into play a bit on the quote. He was speaking on how his leadership style and role had to change after he came back from his injury. Basically, how he accepted his new role with the team and recognized that the defense was now the strength of the team. I don't think it was intended to be an excuse for his play or a shot at the system.
I will say that there's merit to the opinion that the system held him back. I do think that's true. It didn't make his job easier. They could have utilized a system that was a better fit for Peyton. That all said, I also think he would have struggled in 2015 in any system.
The big question is...now that he has accepted that role, if he plays in 2016, could he play much more effectively because he accepts his new role with a team?
Kind of like how some former power pitchers in the MLB still manage to have a late career renaissance after they learn how to deal with their diminished velocity. Manning may not be the same guy but can he still be an effective member of a team? I think it's possible. But like I said, that would be as an intelligent game manager rather than a quality starting QB.