What is normal to find in your partner’s childhood photo book?

Hey. So I want to ask all moms and children - basically everyone haha. Here is the situation: my boyfriend asked if I wanna see some of his childhood photos in his album. I of course said yes expecting baby pics and pics of parents and all - quite the norm. Maybe a photo of the ultrasound or whatever. But… here is when I want to be understanding. And I also want to judge. And I think I cannot be SO understanding. Because after some pages of normal photos, the thing I wish I could unsee came. There was A LOT of photos of his mom. Fully naked - when she was pregnant. To see the belly grow. And I get it, people do it. That’s not where it ends. Then there were pictures from the actual birth. With her lady parts being photographed - bloody and with him as a newborn lying right there. And then a lot of other bloody pictures that I just zoned out from so I don’t know exactly - but I assume there were pictures of the placenta and everything etc.

He forgot about those pictures so I don’t really blame him but… later I asked if his sisters also have those photos. He said yes and that it’s normal. Then I asked if it is normal to do that in Denmark and he said yes it is normal doing it here.

I said I find it a bit weird because I get that it is an emotional and special experience, but I think I feel off about putting it into his photo book…. Like idk mom but maybe keep it in your bedside table as a nice memory?

Combined with the fact that his mom seems rather self centered, I am not understanding the intention. Is it so he remembers where he came from and his potential GF (ehm me now) knows where he belongs first? Haha. Or is it educational? I can see it being for education purposes, but I think it’s possible to make children aware and ready without involving yourself so much?

And please I want to mention that I have a very positive relationship to nudity, sexuality, intimacy and all that. So I do not think it is me being a prude. Also if it is about the sentiment of greeting him into the world and his family - where were the pictures of his father?

I remember him telling me that when his ex was over at their childhood home, his mom pointed at some spot and told her - “this is where he was conceived”……. STOOOP!

So my question being - is this really normal in Denmark?