Earlier quoted context omitted.
Dating makes money, Tinder is successful, so Facebook are leaving money on the table... or worse, letting someone else take the money from the table... if they don't do dating. Of course, the pool of potential people you can date is "those on Facebook", so that's hilarious and compounds existing problems with echo chambers.
I would love a date people NOT on facebook app.
The only things I use mine for are 1) using FB Messenger (lite) to communicate with some other people who use that, and 2) selling some of my crap on FB Marketplace.