I'm just going to say that colonialisation does hurt people, slavery does hurt people and rape does hurt people and I don't think they're equivalents to endogamy and/or arranged marriages. Literally ask the people who are on the receiving end of all three of those and you're going to get some pretty universal results (as far as whether they like them or not). I don't think you need morality to understand whether rape is bad or good. People in arranged marriages from cultures that practice them don't universally despise being subjected to them the way the three sources of comparison you made do. I'm talking very specifically about how society expects adults to couple and ultimately marry.