My reading is that it’s linked to real-world approaches, so 45 percent of young men have never made a real-world approach on a woman. I suspect when it comes to things like dating apps, women approaching them, things just happening between people who have known each other a long while et cetera, the numbers will be different.
This specific statistic is more aimed at highlighting that young men are becoming increasingly reluctant to make real-world approaches to women, which is making it much harder for men and women to date.
Hope that makes sense, thanks for the comment!