Is it weird my bf won’t change my daughters diapers?

So it seems like in Hispanic culture (from what I see in my family) men don’t always foot 100% of the work in caring for a child but it has came in conversation with my coworkers that are men help bathe and change their daughters diapers but in my relationship my bf didn’t really want to help with that because shes a girl which I was annoyed by but it made sense to me. And my mom just told me my dad never helped change diapers for me or my sister because we were girls and he was a man. Do you guys find this weird?