…for women, yes. If the effect exists for men at all, it is smaller. It's also irrelevant (if it affects men) for two reasons - and these are the points you need to address:
(1) men who choose to remain virgins do not fix the problem.
There are already far too many men in the "market" (dating, marriage, etc.) Even if you could convince 50% of them to remain virgins until marriage (which is an impossible goal), society would barely notice. Only the top 10% or 20% of men are getting laid anyway. The bottom tiers are invisible and inconsequential.
All that happens if some random pollack sees this thread and goes, "yeah, he's right! I'm not going to have sex with women until I get married!" - all that happens is that he is condemned to be a virgin forever. Because now we wont even be able to get married, at least not until he's old and some single mother gets her claws into him.
(2) attracting and keeping a woman is a skill that must be learned and practiced.
In past generations, your father might have taught you how to do it. But today, you either didn't have a father, or if you did, his advice isn't helpful because he was dating prior to the age of social media.
If you manage to find a virtuous woman today (you wont, but hypothetically), you will have to swim through a river of shit just to get to her. You absolutely cannot say, "oh boy! I'm a virgin too! Let's get married!" because:
(a) She will find you boring and creepy.
(b) She will be surrounded by top-tier men who are confident and whose game is smooth as fuck. Even if you're not outright boring, you wont be exciting like they are. To her, you'll be "a really nice guy, and I'm sure there's a wonderful girl out there for you! (just not me)"
(c) You'll be completely unprepared for her shit tests. And yes, even the best girls are going to shit test you. It's not culture. It's not a failure in women. It's not degeneracy. It's a feature of human sexuality. It's instinct that all women have. It's an important process for ensuring only the best genes propagate. If you don't have experience passing shit tests, then her instinctive reaction (even though you navigated (a) and (b)) will be loss of attraction.
Getting and keeping a girl is a complex and subtle art. You are not helping men by advising them to remain virgins until marriage. You're setting them up for failure as surely as if they were going into battle and you told them, "don't train, just pray and read the bible."
Okay, but that knowledge doesn't help a pollack to get married and have kids. "It's the jews!!" isn't a plan. Here's a plan:
- understand that high school is the closest thing we have left to a tribe.
The benefit of a tribe is that everyone knows everyone else's business. Ideally, tribes use social pressure to keep sluts in line (and to correct weak men too, but that's a topic for another day). The social pressure is gone, but the "knowing their business" is still there. Bottom line: high school is the last opportunity you will have to identify non-slutty girls. After high school, you will never again really know what a girl is like until after you're dating her and she reveals herself (spoiler: she's a whore)
If you want to get married and have a family, you have to pick out a girl a few grades below you in high school. There's really no other way that I can think of.
- practice, practice, practice
Not on the high school girl, she's still too young. Plus, you need to learn a trade. The military is still reasonably good. Practice picking up women. Practice going to bars and clubs. Don't get aids. Don't ever catch feelings. Even when you meet a girl who seems sweet and genuine, remind yourself that you didn't know her in high school.
- return home and "reconnect with friends"
This is how you eventually hook up with your future wife. Stay friends with her older brothers, or just invent an excuse to contact her now that she's 18 and about to graduate.
Chances are, you wont even be able to identify a virtuous girl in your high school. They are literally that rare. If you do, chances are, you wont be able to pull her. Even if you do, chances are, you wont be able to stop her from going off to college herself and slutting it up. This is still a million-to-one, but this is the only plan I can think of.