skipTypename adds __typename in fragments?

[thomas-at-perdoo]

Hello, just a quick question:
Isn't the purpose of skipTypename: false to mimic the behaviour that Apollo has (e.g. requesting __typename implicitly in queries in order to properly cache entities)? If so, I'd expect __typename to only be added in queries / mutations not fragments. So I'm wondering, what is the rationale for adding __typename in fragments and is there a way to disable that?

Thanks 🙏