I can't say I agree, rather than polish what they have been doing have been mostly usability and design regressions for me. Like take recent changes the monitor settings dialog for example:

- It used to start with a reasonable size and layout, now it wants to start maximized for some reason and the part of the layout reserved for the monitor arrangement changes size depending on the connected/enabled monitors which pushes other controls around.

- Changing the monitor layout now requires an additional click to enter an edit mode for no reason instead of being able to drag the monitors around directly.

Meanwhile the it still doesn't remember settings when you disable and re-enable monitors and KWin/KDE itself still has tons of issues dealing with multiple monitors like moving windows around or opening windows on a turned off (but enabled in KDE) monitor instead of the one you are interacting with. And of course you can't script the whole mess with xrandr because KDE doesn't adjust the desktop in response to changes that don't go through its settings.

Other areas have seen similar pointless changes that are at best things I need to manually undo or worse live it until I resort to manually patching things to work like they used to. Honestly considering more and more to move to a different DE after over a decade of using KDE.