That would depend on each person and even so, what about making a FOSS alt for dating apps means we need to share personal data? Each person will have their own privacy threshold and need different approaches. Some people just don't want their personal data used for monetization, so locally hosting yourself or finding a server that won't sell data is the only requirement.

plus, like I said, just because dating apps share so much personal data doesn't mean thats the way to go. When you meet someone in person, you don't have their whole life to evaluate before deciding to introduce yourself. Same here.