Why "finally"?
To me, KDE's job should be to organize and render windows, application launcher icons, and the like
If I want a virtual machine, I'll use a virtual machine for that
All this "KDE suite" stuff and what not is unnecesarry - some of these are good pieces of software that I like to use, but there's no reason they need any integration with a desktop environment (arguably a few basics like a file manager, VTE and plain text editor are expected and fine but in theory also can be wholly separate)
Also, any integration attempts like making the icons a common asset rather than each application have their own, _fail_ and make things worse, with these integrations applications less often have working icons at all, and more often have mistakes like black icons against a black background making them invisible