Without her vision, they've just gonna be stuck in Ssera/TXT typa sucess. Without vision you can't go anywhere.
Le Sserafim has had multiple tracks chart on the MelOn yearly chart, and they've got 5 right now on the monthly chart. I wouldn't say they're exactly hurting for success.
As for TXT, Bang's stubborn pride does hurt their success potential a lot, but they're still very successful in their own right. They're the top bg for Korean schoolkids, they're basically the only active 4th gen bg that exists to most Koreans, they're the top global TikTok influencers from Korea, they sold out Lollapalooza as headliners, they had one of the most profitable tours for a Korean artist last year, and they're the foreign artist with the most consecutive #1 albums in Japanese history.
99% of idols would kill to be "stuck" at the type of success that Le Sserafim and TXT have.