Rebuilding can feel like a war. As such, I think the longer it goes on, fear and despair start to play increasingly larger roles.
The gung-ho attitude at the start of a war wears off after a while - things don't always go according to plan, and multiples years feel a lot longer than you thought it would initially.
You start to wonder if it will ever end, or how you can possibly survive without something or someone you've had up until that point. You don't think you can ever replace what you've lost, and the human condition dictates you try to find the quickest path to mask, if not end your pain and discomfort. You start contemplating worst case scenarios a lot more. What if we become like that team, or those group of people? What if this is the best we can do?
People start to drop off. People who knew the plan for the start to say "Yeah, but I've given it some thought and I feel different. This is different."
And in some cases, there are new things to consider. But there are also a lot of instances where fatigue has set in and people just want it to be better....now.
People bristle at the notion, but the arguments for Zucc, Hayes, McD and Kreider have a lot of overlap. Some of the words get moved around a little, and the order of statements change, but I think most people would be surprised if we undertook an exercise where we posted a statement about losing/not re-signing a player and then gave them a multiple choice option to guess which player it was associated with.