In my earlier posts, I indicated that even Spice Girls or Billie Eilish did not manage to do stadium tours; they did or do arena tours.
I did not check Madonna, Mariah Carey or Taylor Swift, since the only notable female soloist in Korean Pop cannot even sell an arena outside of Korea.
Blackpink has about 50:50 ratio of stadium and arena tours.
Twice has about 40:60 ratio of stadium and arena tours.
Yes, until last year no female singer in Korean pop did a stadium concert (Tokyo Dome is another animal), and until 2023 no female act relevant outside of Korea did a Stadium Concert , so it might be aiming too high too early, but given the rapid rise of 4th gen Kpop acts I think we might actually have a female idol doing an all-stadium tour across the world.
Ive and Lesserafim have more emphasis in Asia. Don't know about aespa but wasting last year was crucial.
So I think NewJeans and Baemon will have better chances for an all stadium tour around the world.
(Yes, I admit I mentioned the singer who will never be part of this discussion than the acts who are actual parts of the debate.)