Ex calling me mommy???😶🤨

My ex had a lot of mommy issues, as she left him and moved state to be with a new man, leaving him.

During sex he would repeatedly call me mommy (which I was never comfortable with) and I was wondering whether this was similar to the daddy kink and if this would be seen as normal? It always made me feel weird and a little creeped out, but what do you guys think?