If you think about this, it seems pretty obvious the reason they didn’t include adoption was that it’s overpowered. The CK series is all about managing dynasties, so the randomness of reproduction is a major game mechanic, one of the primary sources of problems and challenges. Adoption would totally negate all of that.
Like, if Henry VIII could just have adopted a son, his whole story would have been so much more straightforward! :)
(None of which really justifies the Paradox response, of course, since adoption isn’t necessary for having same-sex marriages (even player ones) and not losing.)
You have the ability to arrange marriages as King or Queen. Just as if you could adopt, you could dilute the power of your enemies by arranging same-sex marriages that can have no legal heir.
But I look forward to the woke brigade assuming the devs hate the LGBT community, and showing up with virtual pitchforks... /s (Disclaimer: I support the struggles of the LGBT community, but I do have a problem with stupid extremist unthinking zealots, and there seems to be plenty of them everywhere.)
No, you play on as your heir, which may be your uncle or some distant relative. This may even be your liege.
(also, there is the possibility your character will cheat, sire a bastard, and then have the bastard legitimized)
As there is no adoption mechanic, same-sex relationships will lead to a game over unless you are one of the few countries that can use the House Seniority mechanic.
So I guess they never got around to implementing adoption.
Banning though...? That was weird.