I feel like you are looking for an argument here. I have never heard of or seen a cultural piercing of baby boys’ ears. I have also not seen regular piercing of older boys’ ears. Therefore I can certainly see that as a mom of boys (I am as well) the idea of piercing their ears as infants would never “be an issue” as in, it wouldn’t enter my mind as something to be done. That doesn’t mean I care if older boys get their ears pierced - personally, I couldn’t care less. It seems like you’re fishing for the OP to cite some “I think earrings on boys is wrong” idea so that you can then come back with a “you’re close-minded” reply.
On the original topic, I don’t like earrings on babies. I don’t judge those who do it because I don’t think it’s that big a deal, however, it’s definitely not my preference.