Since I don't consume any of these beverages...
...I really can't render an opinion as to their taste.
But since their explicit sales point is to chemically alter my state of being instead to merely quench thirst, I am naturally adverse to them. Do I think they should be outlawed or otherwise regulated? I don't think so. Like I said, more people die from peanut butter.
I think the "bath salts" issue is far more urgent.