LSRFM was supposedly to match up against the girlgroup giants of the 4th gen, but it's been coming short in those efforts.
Acquiring Sakura and Chaewon, they were expected to carry the group over the top with their existing fanbase and being from a Produce group.
However, Kazuha has been unexpectedly the most trendy and buzz-worthy member. Chaewon barely made any noise, nor is she popular as solo guests on variety shows like her 4th gen contemporaries like Karina/Winter, Wonyoung/Yujin, etc.. Sakura always had a fanbase, but domestically, she's not always seen in the best light, maybe it's politcal but controversial either way..
While they do contribute in some ways with album purchases, those numbers are always heavily inflated and never truly reflect the real domestic popularity of groups. Stans use them for their own arguments, but that's neither here nor there.
While Chaewon was seen as in the upper echelon of popularity between Iz*One members, did HYBE miscalculate her relevancy amongst domestic general public, and how it all changes when you take the individual out of the Iz*One lineup when they begin operate solo and in their groups?