I have never used an online dating app, but I have to imagine that requiring mutual likes based on a public profile eliminates the strategy of guys who have a really good pitch tailored to a specific woman. They have only one public blurb and a picture, so I could imagine it devolving to a filter that only selects for profile pictures in practice.
Not saying that’s not worth the trafeoff though, I don’t have a better idea to fight spam.