This is an interesting idea for same-sex arranged marriages being a thing in fantasy media. It would be be interesting if gay marriage in “Ye Old Fantasy Land” was a form of soft disinheritance or abdication.
(This site is LGBTQ+ friendly. We will not tolerate any hate speech, discrimination, or bigotry in the comments below. Thank you.)
I’ve actually read a few yaoi Asian web novels that genuinely follow this logic. Wife is First, and The Golden Stage are a couple. In both cases the ruling emperor went arranged it because the people were getting too powerful and cutting of the legitimate lineage like that was better PR that (another) murder attempt.
Historically people, particularly women, would occasionally be forced to join the church for similar reasons, so the logic tracts.
I’m honestly not sure whether this is pro- or anti-LGBTQ+, and I’m fine with not knowing. I do remember hearing a group of friends speculate once as to why those who are against homosexuality don’t just create colonies in which the gays can live, then let said colonies die out for lack of births (there are obvious flaws in logic if you look closely, but it was idle speculation).