L.G.
Hi K.!
I have an 18 month old boy who loves putting on high heeled shoes and mary janes and ties pink scarves around his head. My husband shakes his head every time he does something like that and I giggle about it.
I always try to remember not to say something to my son that may damage his self esteem in the future. I know it is a phase and I don't read into it at all but what if he really did want to be a cross dresser when he grows up? I would still love him just as much. So for now, I just tell him that he can buy the mary janes when he gets a job but while I'm paying for shoes, he's not getting those.
The only advice I have to tell your husband is to try to remind him that those lectures may be making your son feel bad about himself and to be careful about that.
Good luck!
L.