It’s like al KDE projects IMHO. Good on the surface and works well. But use it for any length of time and you will find problems, unfinished areas, or parts where it was implemented without considering why it was like this in the first place.

For example, plug your 1080p laptop into a display with 4K and watch are your desktop icon gets sorted by a-z randomly instead of keeping the order you had it.

Or try to add a calendar even to your system by clicking the calendar which is found in the date and time on the taskbar.

Online accounts added to the system do not integrate into other KDE apps requiring additional signin.

I feel this is probably caused from KDE’s team being small, but having a large suite of apps.