User blog comment:The Milkman/No Love For Leviathan?/@comment-24174486-20120915231103/@comment-24174486-20120916143357

If you think that the bias of a character in the ending automatically becomes the entire point of the ending, then there's nothing I can do to help you.

Considering what else we see in the series, it's much more reasonable to see the theme of the ending and the Catalyst as "paraonia over xenophobia only makes things worse".