I think alignment is OK when it's not talking about individual acts, and trying to justify (or condemn) them.

So "Has X changed alignment through doing this, that, and an overall change of attitude" would be a safe topic.

But "X act was the right thing to do, because....." is a not-safe topic.

This is just my guess based on the phrasing of:

"moratorium on discussing the alignment/justifications of acts in the comic"