It's not forced but where it's culturally common it's often the default presumption.

My wife didn't change her name but that meant she has a different surname to our children. That can cause minor annoyances in airports, for example. It's not a big deal, and it's fairly predictable, but it's a thing.

Nobody's forcing anyone to do anything (in the countries I'm aware of). This whole thing is people about what two people choose to do between themselves, so I don't see why anyone should have any opinion on it at all.