I was similarly confused. I think I know what his reason is, but he never explicitly stated it. I may not even disagree with his reasons, but it's difficult to

I was similarly confused. I think I know what his reason is, but he never explicitly stated it. I may not even disagree with his reasons, but it's difficult to know for sure since he never actually stated those reasons. He only alluded to something that caused him to think of those reasons.