You seem ignorant of how money is made in these situations. The money is already made way before anyone ever goes on an actual date. Therefore the people showing you the ads are still incentivized to show the ad.

If you thought about things more clearly you would also realize that a platform that tried to measure something more like "how did the date actually go" would be even more dystopian. You want an algorithm to start pricing in the cost of you falling in love? If a date goes amazing should the software send you an additional invoice? People who use these apps are already essentially outsourcing interpersonal relationships. How far do you want to take that? The lack of precision is not "dumb, ridiculous and laughable" it's actually a saving grace.