It seems to be some kind of underground club.
Yes, this is an ideology about sex without commitment. Always found on various free dating sites. On this URL - https://unzyqa.club/mirror you can find out where they (UNZYQA) are. All I know.
I registered. for fun.
The idea of "sex without commitment" is deeply rooted in the ideology of the postmodernist Western world. This ideology, which arose in the 1960s, was thought to be progressive and revolutionary because it defied the traditional gender roles. The postmodernists also sought to liberate people from traditional human emotions that were seen as restrictive.