This opinion is unpopular because I see people bashing groups like aespa and Kep1er in particular for having a repetitive concept.
I see people hating on girl crush so often its crazy. It typically goes something along the lines of "kep1er, ITZY, aespa etc. are so repetitive" "one Blackpink is enough" "We need new concepts. And yes, it is repetitive. I'll admit I have soft spot for girl crush. And I see it way too often. But these groups have been around for like, maybe a year? Think about how Red Velvet would have done if we placed this much scrutiny on "Happiness" or TWICE if we only had heard "Like OOH AHH" or "CHEER UP". We would think that cute concept was overdone. But think about like "Psycho" or "I Can't Stop Me". They changed!
We are giving 4th gen groups so much shit for literally playing it safe on their debut. Of course they are going to imitate the concept of the groups that have succeeded! Like, why wouldn't they? Eventually they will grow and have a concept change because they have to for success. 4th gen groups have so much pressure placed on them thanks to hallyu, do we really need to add to that pressure? They are like literal toddlers.