They wanted to make the OS more modern by adding more modern elements and more modern icons and more rounded corners to make it feel fresh and elegant but unfortunately the OS looks terrible with inconsistent theming, bad user experience etc etc etc

So yeah I'm still a Windows 11 hater I'm not a lover I just see that it has potential if they make it as the users wanted if they actually listen to user feedback this OS would have been way better but unfortunately they don't since they are a big corporation and big corporations hate optimizing for users but only care about profit