I don't fully disagree, but I think CQ Ashe want's to be tortured like that. So it won't destroy Ashe, she'll just transform into a CQ gremlin.
Well that's kind of the issue with the current triple-route split and how little it actually differentiates from each route in that it's hard to disassociate the CQ route from everything else, and it's hard to argue that the CQ route currently are entirely different from what the characters are like in the other routes, which in turn makes it hard to argue that Ashe does
want that.
She's a psychologically broken anxious mess that has a very hard time attaching herself to people due to what she is and her fear of it, so she is
very meek in most regards and isn't exactly someone who's used to saying no, but her acceptance doesn't mean want either. On top of this, Rachel doesn't exactly come off as giving a shit about what Ashe actually
wants on the CQ route so it's again hard to argue that it won't destroy Ashe.
There have been plenty of NTR games that literally focus on destroying someone through NTR in order to "convert" them, so it's entirely in the realm of possibility that it won't exactly be a happy ending given how hardcore the dev seems to be getting in the CQ route.