It sounds like you're simply dancing around the issue. The rejoinings were most certainly not consensual, given that they resulted in the destruction of seven worlds and eradication of all life on them, a point that's explicitly stated in the in-game text. It's a bit like saying that you'd be fine with mass murder if it was 'consensual', which is a nonsensical use of the word. So are you against what the Ascians did or not?