Just found this too, through the rust post some days ago…but its quite obvious that from a usability context that btop is easier to use. With bottom you have to memorize all hotkeys wheres btop is showing them right in the interface.
Maybe windows rules will now work properly instead of being buggy and delete themselves…fingers crossed Imho KDE is too big, there are so many cogwheels they miss the opportunity to actually polish each and every aspect.