No, it's precisely the opposite.

If they're optimizing for engagement (the same as Netflix and everyone else), that comes from the the number of active conversations you wind up having. If you're swiping a ton but matches never message you, you'll give up and try another app -- that's not engagement. The more engagement you have from real back-and-forth messages (not spam), the more real-life dates you go on (if you're doing it right). And the more people you meet, the more likely you are to leave.

It's not "enshittified", dating is just hard. People are picky and it's difficult to get a good read on people from just their online profiles. The dating apps just want to keep you engaged and spending money. They don't need to make finding matches harder because they're worried you'll leave -- finding matches is hard enough to begin with. Trying to make it harder is the least of their concerns. They're trying to give you as good of a service as possible, while getting you to pay. So they limit numbers of matches to get you to pay. They're not limiting quality of matches.