that people who don’t have uteruses “don’t have a stake” in birth control access, abortion access, family planning, etc.?

Obviously people who can get pregnant have more of a stake, and each individual pregnant person should get the final say in what happens with their body. 

But “birth control/abortion is a women’s issue” or even “birth control/abortion is about people with uteruses” rests on the assumption that the people getting us uterus-having people pregnant don’t care about us or their potential children at all.  Apparently they’re all one-night stands or “deadbeat dads” who disappear when they find out they might have to take care of a baby.  None of them might actually want to have children and help care for them.  None of them care about their partner’s health, physical and mental, and want to help them avoid a pregnancy they don’t want.  None of them apparently even care about paying child support, which is nothing close to giving birth but isn’t exactly a trivial obligation, either. 

Being a parent is a serious responsibility, and it should be obvious that being able to plan it carefully or avoid it entirely is an important concern for anyone who might become a parent, whether they’d be the one getting pregnant or not. 

If you are having or would like to have PIV sex, and if you have an opinion about whether, when, and how you’d like to be a parent, then the availability of reproductive health care affects you.