That is, imagine a tinder-like app where 50% of the things shown to you are photos and 50% are bios. But they are all mixed up so you don’t know whose photo matches to whose bio.
You only “match” with someone if you swipe right on their photo and their bio.
A simple fix would be to only allow users to swipe on 20% of the photos and 20% of the bios.
And everybody else will follow suit once they realize it's an effective strategy. And you'll have a race to bottom.
That being said, it seems silly to try and force people that only care about looks into caring about bios. Who are we to tell them how to select a partner? Maybe they would be most happy with an attractive partner that doesn't share any of their interests. If that's who they want to find, then instead of telling them they're wrong, we should help them do it.
You can unlike to prevent this from happening and it would be nice with a slight delay in notification to the person you liked so they're not swamped with likes and unlikes because people are trying to beat the system.