I agree, also I don't like and will never like situations concerning politics but a story can't progress without a little politics in any way. Also, Millenia is such a waifu, she even said it herself that she won't give up on him. If I were to re-write this, I'd make his last words more in an educated-hopeful kind of way (if you know what I mean.) and not an ending-relationship kind of attitude. Like he just gave up on her and focused on his goal (which in a sense/logical/rational thinking is acceptable) but anyway, I didn't like how he did it.
TLDR: Author rob us of more Millenia.