I always figured that people just didn't want to deal with the whole male lactation thing and Tam-Tam's situation made an easy workaround for that. But then again, you can be pregnant around Kase as a full Kaithrit without him lactating, and if it's a hormonal imbalance, there's almost certainly a way to deal with it story-wise if the writer doesn't like it. So, it definitely would be nice if we had some catboi daddies. Or, you know, a catgirl we could have kittens with that wasn't in prison.