I'm actually working on a startup where my business interested on aligned with users. We are monetizing mostly through trips, so we can't have fake users and send fake messages. Those won't result in real trips.

This aligns our financial incentives with our user's incentives to have amazing experiences with someone they like. We also have a product for couples, so we won't lose 100% of our users.

More info if you're interested: https://blog.fairytrail.app/2019/09/reinventing-online-datin...