The whole MRA spermjacking fear is overblown, I think: if you don’t trust your partner enough to trust that they’re telling the truth about birth control, you don’t trust them enough to not lie to you about having an STI, and so you should be wearing a condom anyway.
Well I do not get what is written here. For instance, MRAs that fear spermjacking are advocating to use condoms or to take the fertility in your own hands. Also, having a spouse you may believe might "forget" taking birth control pills is something different than believing your spouse would cheat on you. Which brings us to another point, obviously the pill is a bit different than a condom. It is obvious when a condom is used for a pill it is not. So putting on a condom might actually tell your SO "I do not really trust you". So things are not that easy, there is a bit of unequal playing field here. Regardless, the question is how overblown is that fear?
Well the NISVS (page 48) has an answer for us:
Prevalence of Control of Reproductive or Sexual Health by an Intimate Partner
Approximately 8.6% (or an estimated 10.3 million) of women in the United States reported ever having an intimate partner who tried to get them pregnant when
they did not want to, or refused to use a condom, with 4.8% having had an intimate partner who tried to get them pregnant when they did not want to, and 6.7% having
had an intimate partner who refused to wear a condom (data not shown).
Approximately 10.4% (or an estimated 11.7 million) of men in the United States reported ever having an intimate partner who tried to get pregnant when they did not want to or tried to stop them from using birth control, with 8.7% having had an intimate partner who tried to get pregnant when they did not want to or tried to stop them from using birth control and 3.8% having had an intimate partner who refused to wear a condom (data not shown).
I assume there are many cases that do not land in the statistics. 1/10 is pretty much....don't you think?
EDIT: Someone in the comments made the same point, I saw it mentioned on Reddit first though.