I swear there's no loyalty in any 4th gen fandom's it just seems like a bunch of multi stans that don't stick around after a stumble in an group's career. But with the quality of music going down...I don't know if I blame 4th gen fans for not being loyal.
i think it might just take some more time maybe? i have no idea though because when i got into kpop at the start of 2018 i was oblivious to things like that so i don't know how fast groups build up a loyal fanbase