If a team is stupid enough to offer that much money to a 40 year old PG, said player would be an idiot to leave that money on the table. This is a non-story to me. If he was away from his kids and his playing was physically unbearable to him, sure, then him still playing might be a story (about greed), but I see no problems here. Signing Nash to that contract limited what the Lakers could do the past 2 years, and I still think relying on Kobe so much last year (vs. Nash, who was predictably injured) had something to do with his injury.
It's pretty greedy if you haven't played or may never play for them but still take the money. It's LA soooo, thank you Nash! Take all their money and run!
It is not greedy if you accept the money in the contract agreed to. That is the risk of teams trying to get players. The truth is, if he physically can't play, insurance will cover the contract.
When players are underpaid, teams don't give them a few million under the table. In the same way, players shouldn't be bothered by fulfilling the terms of their contract and expecting the team to do the same. Nash is doing his part. He is rehabbing.
Despite the excellent point he makes in the video about not giving up the money, he also makes the point that his few successful games this season before the team went young seemed to give him a feeling of contentment. He seemed much more ok with that being it since he proved he could still do it. I could see him decide to retire since it would free him from team obligations. On the other hand, the dude seems to really want to play.