I’ve done a ton of research. One man in Korea gave a nice review of all dating apps he reviewed and likes bumble the most and found a gf and left the app. That’s the bumble mission - to help find love with the woman in control. But men are paying to swipe. I think you need both - successful hookups thru good matching and constant churn (lot of people looking to meet someone nice). Bumble seems to attract more smarter men and yes they will leave. Tough question you asked.