Because you're replying, let's get into it—I am saying that 200 years in, you're not really going to have that option in a closed population anymore, & it's even presented as a begrudgingly normalized reproductive taboo. It's both foreshadowing & a metaphor for the disnormalization of vault program
like YEAH the stupid suits I'm charge of 31-33 didn't think about that consequence. and YEAH the whole vault 31-33 system has regulated to mitigate those impacts. and YEAH ethics and consideration would have been nice in any vault, but that kind of becomes the point of the series!
Hey! Ghoulgins is a loving family man who has spent several centuries trying to find his beloved wife* and child.
*He may still be a wee bit upset with her about something that happened pre-war. I'm sure it's nothing - couples fight, y'know?
I love the Fallout lore in general, and the series abided to the lore very well.
Even for people who have no idea about the Fallout games at all could easily see the series and feel good about it.