You’re right, those fish are not specific to religious people. But it is true that religious people give more time and money to them. Less religious people tend to give and volunteer less for such causes. I offer no judgement or theories about why, but the data is strong.
About the sex ed., the clinic I volunteer at offers pregnancy related information, including pamphlets that explain pros and cons of things like the ‘day after’ pill. Of course the preferred option is always ensuring good parenting for the newborn child. Clients can take video classes on parenting skills to earn reward points good for diapers, baby food and clothing. It’s really a good program, provided free to the people who need it.