Didnt read everything but back in the days it was active that we could kick other players during combat. Personally i had a very very bad deltascape 4.0 run when it came out and ate literally all ice spells which froze and instakilled me everytime. Thats an understandable reason to kick someone as they dont really contribute to the fight.

On the other hand people would probably kick others like a second before the fight ends and the kicked people gained zero at the end despite helping a lot. (Maybe or maybe not.) Thats one of the main reasons i'd assume it got disabled.

Dont get me wrong. Going afk in the middle or at the beginning of a fight if it wasnt an emergency is a no-go. But we can't prove it if it was an emergency or not so yeah.. thats that.