I still haven't seen an answer to my use of AirPlay, either. Apparently Chrome can do this to a Chromecast, but… If I'm already giving my data to a horrible monopolistic company, I'd rather give it to the one that at least pretends to care about user privacy as a feature (Apple), rather than considering user privacy a bug (Google).
KDE has a lot of little nits, too, and it wore on me. Some of the ones I can think of are:
* When KWin crashed, the title bar font went from 12pt to 18pt. I could not fix this unless I ran some specific dbus command in Konsole and then immediately ran `kwin_x11 --replace` afterwards.
* Kickoff doesn't let you click "Applications" to go back to the beginning. I suggested it twice and even tried to implement it myself but they have layered everything so deep in QML I was lost. Apparently, they have redesigned the launcher again in 5.21, which released after I was gone, and now it looks like a bad copy of Windows 10 instead of being somewhat decent. Fabulous!
* KRunner took about four seconds to respond to input, even on a 16 CPU (Talos II) system.
There are plenty of things I loved about KDE too: Kate is amazing, Konsole is a fantastic terminal emulator, and I still use Tellico to this day – I even contributed the Homebrew formula so others can enjoy it on Mac OS. But the experience of using it as a full DE was just not all there for me.