I was reading old 2ne1 comments and a lot of the Kfan comments said stuff like "Dara if you date X or Y I'll be devastated", or if "Dara is caught dating I'll be devastated" but suddenly after 2ne1's disbandment many of her fans (even Kfans) were desperate to see her in a relationship and even made fake ships with GDragon, Donghae..etc. I believe Dara got it earlier in her career since she debuted fairly later, but now we're seeing Xiumin, Solar, Irene, Jin hit the same age she was when she started getting these comments.
Are fans now even more strict over dating? Especially with visuals , there's a ton of expectations for them to be "pure" for the fans. Fanboys of Irene, (even disbanded groups like Lovelyz Jiae) are not letting up at all like they did for earlier idols. By their late 20s-early 30s, much of SUJU were openly talking about dating -- something I can't see any of the elder line of EXO/BTS doing today.