9 year old DS has always loved handbags, necklaces accessories that sort of thing and I've always just let him do whatever he wants in that regard because why not.
he wanted his nails painted so I let him and this morning his dad came to pick him up, grabbed his hands pulled a face and went " Eurgh what have you done to your nails?" And was pretty clear in his disapproval. He did this recently too with a bead necklace DS had on and said i was making him "girly" (nothing wrong with being girly at all, but he's not even typically 'girly' or feminine, he just likes what he likes)
ex has turned into a right Jordan Peterson, Andrew Tate worshipping type of person since we broke up and I don't want him being mean to DS
I have always brought him up with the view that things are for everyone and aren't gender specific but I don't want his dad making him feel bad about himself.