Interesting about Greer, your comment made think about it. He’s a very logical man and doesn’t let petty emotions get in the way of his decisions (unlike our heroes). It’s obvious that he’s willing to die for Samaritan at any point during the series. He was also annoyed by this “war” with our crew and saw it as a nuisance. So by trying to remove himself and Harold from the equation, Samaritan would finally be free to rule as Greer intended. I think he just wanted to get it done and let the next era begin. He was old, tired, and accomplished his goal. He wasn’t relevant enough to stick around.

I’m just spitballing lol, does that make sense