"Look, man, I don't know what to tell you besides, everything is way more complicated than you think. What was going on with SOLDIER was real messy in those days. You're still a kid figuring stuff out... but people change. I don't think future-you was wrong for making that choice."

Feels kind of weird to be defending a choice made by Sephiroth of all people, but in this case, Zack agrees with it. Or at the very least, he can't judge him for it. Thinking about how he'd felt, having to fight and kill Angeal... if he'd had the choice to refuse that order, he might've been tempted, too. He had refused to do it, until Angeal forced his hand.

"It isn't about who matters more or whatever. It's about knowing your own limits. You're allowed to have 'em."