Jul. 16th, 2017
I think that some people forget that we have characters such as Riku and Lea, who did some things far worse than Saix ever did, who have either gotten a full redemption arc or are in the process of going through theirs.
Riku, like Saix, was a vessel for Xehanort's heart, who let his own jealousy and need for freedom consume him, and therefore opened himself up to Ansem/Xehanort's influence. He was able to overcome this, and Sora forgave him. The fandom forgave him. Riku did some fucked up shit in KH1, felt bad about it, and was a fully redeemed character by the end of KH2.
And Lea. As Axel, he did his fair share of bad things, usually for selfish reasons or because Saix told him to do it. Hell, I do still think his entire redemption arc is fueled by his own selfish reasons, because that fits his character, and again, the fandom has forgiven him.
So why doesn't Saix/Isa deserve forgivness?