I hear you. When we did our hospital tour, one of the dads said in the lift to the group afterwards "Good luck to all the mums" and another replied "and the Dads"... Then I said "and the partners".
DP hugged me when we walked out and said thanks for standing up for her.
On another note, we did the calm birth course which I must admit was very inclusive. The lady running it always referred to the partners as our 'support people' or 'other parent'. There was also a single woman in the class who she was also very inclusive of. If only more places were like that!
What's the demographic like where you both live @Chekry?