Yes. RKG, Orko, Nyann and etc are the only people who left indeed.
They don't even remember their own previous clan members and then ask why they left, labeling them as "ETC"...I̶ ̶a̶c̶t̶u̶a̶l̶l̶y̶ ̶l̶a̶u̶g̶h̶e̶d̶ ̶a̶t̶ ̶t̶h̶i̶s̶ ̶t̶h̶r̶e̶a̶d̶.