Honestly, it's never been clear to me what the original Japanese meant, since I've only read summaries written by other people and can't read the language. I like your interpretation far more than what I wrote above, and hope that's how they'll go about it. But like you said, changing the name of the "Shadow Sirens" isn't a good sign.

I deeply loved TTYD when it first came out, and it's one of my favourite games of all time. I would hate to start resenting aspects of it because of their involvement in degenerate leftist propaganda.