This isn't just a trick, it's outright fraud. They're playing with people's emotions and not just giving them nothing - they're abusing people's most basic need of feeling loved.
Think about how vulnerable people become when they're searching for love. And then this corporate giant comes in with an army of psychologists, A/B tests, and analysts to figure out how to best extract their pound of flesh and offer nothing in return.
Forgive me for saying this, but fuck Match.com. The FTC should evaporate half their liquid assets / market cap in fines.