Sigh. Every comeback, there are always talk about "oh no, the song isn't GP-friendly!1!!1" but what even is GP-friendly, actually?? We talk about this all the time, but if companies can actually pinpoint what the GP likes, then the majority of kpop groups won't have trouble charting. Currently, only BP, BTS, Twice, OMG, Brave girls for 3rd gen and Itzy, Aespa ( in Next Level era) for 4th gen are charting well. (GIDLE charts well too but we not sure now due to sj scandal). I remember when Next level came out, everyone disliked it, its experimental or thinks it wont chart because its not "GP-friendly", but isn't it dominating the charts now?
IMO, if you dont have the resources and hype of BIG3+HYBE, then the best way to chart is actually through marketing+popularity+viral power than the finding the fickle "GP-friendly" song. Idle and OMG started charting well because of Queendom hype, BG due to viral military vid, and Jessi partly because she's so active in variety shows. I think Cube has been releasing promo material well, and soyeon has a lot if guestings lined up. Either way, SY solo is cube testing the waters on public+fandom after SJ anyway. they probably wanna know how much of the fandom is left, and i think the sales are okay for a solo so far. (almost 20k first day sales)
Also, YT channels probably aren't reacting because they are wary of SJ scandal and are in a "wait and see" for public reaction, not bc CUBE isnt doing enough promo