This is absolutely not an accidental phenomenon, this is the optimal outcome for dating apps, because that's the only way to prevent women from finding what they are looking for too quickly (and then leaving the app).
NO dating executive thinks like "women leaving too early because they found what they searched". This sentence does not exist in any of the teams.
Instead, they fear that women are leaving too early because of traffic they bought and that they have a bad experience and leaving, so they are no more a magnet to other males to swiper their credit card for a new subscription.
For marrying: I suspect they are about as picky?
These are on platforms where you have profile pics and jobs, front and center on your profile, and the algorithm learns from your preferences based on that. The questions on this platform seem to suggest that the algorithm matches based on anything but that, so perhaps we have different, more open-minded outcomes on what a good partner for someone is like rather than who the ideal man/woman is like.