https://arstechnica.com/tech-policy/2019/08/sex-tech-companies-protest-for-the-right-to-advertise-online-or-in-the-subway/

If you use Facebook heavily, it might come as a surprise that the platform says it prohibits adult content in ads. With everything from a constant stream of "boosted" posts from fitness models to erectile dysfunction ads and "how to initiate sex" ads aimed at brainwashing your wife showing up in timelines, this seems like a weird flex. But Facebook—along with other companies and organizations, like the NYC MTA—does have such a policy. Unfortunately, enforcement of this kind of policy tends to be wink-wink nudge-nudge for ads and services targeting straight male customers, but it's often enforced sternly by-the-book for everyone else.