Oh please. This "boring group of performers" tag is a fake narrative being pushed by insecure, jealous fans of groups, who are triggered over the scale of NewJeans' many accomplishments so early into their careers.
What they have achieved both domestically and internationally is completely unassailable, so people will find other subjective ways to attack them, accusing them of having "weak vocals" or "no stage presence", with very little to support those opinions other than "it's just my opinion lol"
I've seen over a dozen, if not more, girl group stages in person. That list includes: Twice, BlackPink, Mamamoo, I*Zone, Itzy, fromis_9, Loona, Momoland, and yes, NewJeans.
At no point did I ever feel disappointed by NewJeans in comparison to those other groups, and their Lollapalooza set is some of the most fun I've had at any K-Pop event I've been to. It's kind of hard to get over 70,000 people vibing to your music and singing all the lyrics, if you have no stage presence.
For months, I saw people claiming "their music just won't hype people up in a concert or arena venue", and then I personally experienced an extremely hyped up crowd at Lolla for their entire set.
I think we need to find a new fake narrative to attach to NewJeans in 2024.