Yeah, I also found it quite hard to decipher and I am not really sure, I fully understand it either. But basically my read was that it was a critique of societal expectations about dating and dating culture.

In the movie, everyone was forced really hard into the whole relationship / marriage thing, even if it just wasn't meant to be. And then they get into marriages, that may look perfect and happy from the outside but actually make the people involved miserable (look at the guy, who was limping, he pretended to fit with his wife, had a perfect and beautiful family from the outside, but everything was based on a lie).

It could also maybe be analogous to dating apps, where you get into relationships with people based on pictures and shallow personality traits.

The whole thing about the "resistance-movement" to the culture was maybe about how even they struggled to really imagine a world without the insane and restrictive sociatal standards. Instead of creating a community without any restrictive social standards, they just forced everyone to act according to the opposite standard (of everyone being single).

Neither ideal was really sustainable or healthy and even though a lot of people felt the problem with this system, no one knew how to challenge it.

That was my read anyway.