A couple of bad songs and Aespa's debut put an end to ITZYs short glory days. Not that I think Aespa will be any huge success in the future, but feels like they took the place ITZY had.
Overall when it comes to the girl groups that have debuted the last couple of years ( I don't want to call them "4th genaration", because it's more like 3.5 or pointless to use the term generations anymore), I feel like it's hard to them to have more than one good song. Some groups can debut with a song I like, or their second song is good, but after that it's like two-three boring songs in a row. No groups that have like three good songs in a row from debut and forward. It's more like for each good song you get two-three boring songs. That make is hard to find any new favorite groups.