I agree with your point BUT if Warner carrying on like a git goes unpunished, why should Rabada be rubbed out? If Warner is rubbed out, Rabada should be as well. You can't have one being punished and the other not. I think they both should be sat out personally because cricket is a gentleman's sport but if one is ok, they both should be ok.
The drop in standards as a result of this is another discussion but I blame it a lot on Kohli and Indian antics to be honest. Definitely lowered standards these days.