When you raise kids in a society that scruitinizes and measures every aspect of their existence against all ither kids, and then send those kids to a workforce where every aspect of their performance and personality are scruitinized and analyzed to attempt to rank them against their peers, why wouldn't said kids seek out such "objective" ranking in their personal lives? We have designed society to produce people neurotically obsessed with ranking and comparison in school, work, and social media, and yet we're surprised when people start being neurotically obsessed with ranking in their performance in dating? This is a problem we created.
> We have designed society to produce people neurotically obsessed with ranking and comparison in school, work, and social media
Comparing ourselves to others is probably built into our DNA. Most primates also have a social hierarchy. A human who didn't somewhat obsessively socially compare himself to others and/or self reflect on his behavior might have been thrown out of the tribe because he would never self correct.