It's also a market for lemons: Every match that leads to a long-term, exclusive relationship is two customers gone for good.
On the other side you got a fresh supply on both sides from kids growing up to be adults and from adults divorcing and even if your matchmaking is perfect and divorce culturally shamed against, people still die which leaves widow(er)s behind, of whom a certain amount will want a new relationship.
Dating apps are a race to the bottom. They're collecting a tax on the lonely and desperate of dwindling populations. Ironically it's not sustainable over the long term.
The entire idea of just wanting MRR and be done with it is a huge, huge part why the world is so screwed. So much of the economy is just devolved into rich people seeking rents.
The divorce rate doesn’t really show that people are bad at judging the ‘quality’ of romantic partners for the same reason that cars breaking down or needing maintenance after hundreds of thousands of miles does not show that people cannot judge the quality of second-hand cars.
You must be really lonely lol :D