Yes, I know that or else Plasma wouldn’t work for most people. What I mean is that it’s so “far embedded” in the sense that it uses an outsized amount of resources to do what it does compared to the rest of Plasma when it is installed, mainly for the sake of integration with those other parts of Plasma. But as far as I’m aware, KMail and other Kontact programs depend on it so you can’t remove it and have them work. Which is Kontact’s big problem, IMO. Way too taxing on the system for too little functionality at the end of the day.