I get what you’re saying, I used KDE even back in the 2.x days. I could argue that this is kind of different though; it’s not only third party themes, it’s everything based on Aurorae. For example, Plastik comes with Plasma by default. Guess what, also has an issue.
I am mainly using Strawberry - I keep away from Elisa because it can’t handle internet playlists (like my di.fm favourites etc). I have fond memories of Amarok, so hopefully it’ll be great!