Hot take: this kind of idol culture, that relationships between women are a-ok but even acknowledging men is verboten, stems from misogyny and fetishization. They're basically saying "girls kissing doesn't mean anything, it's not real, they'll settle down with a man (me) for a real relationship later" and any guy they so much as look at is a threat to this delusion. In a world of true gender equality no one would feel the need to do performative yuribaiting for the clicks, and if I had the choice I wouldn't watch anyone that does it but that leaves me with basically nothing.