Paul Revere and the Raiders, though quite popular and commercially successful, were considered a very lightweight and unimportant group (and I agree). Usually it didn't matter what they sang, because their fans were "teenyboppers" who just danced to the music and didn't notice the words, while the rest of the listening public ignored the group completely.
In 1966, they were scorned for recording this anti-drug song at a time when drugs and pro-drug songs were "in". But what nobody seemed to notice is that "Kicks" was not MERELY an anti-drug song; it also contained what sounds to me like a hint, or suggestion, that the right way to get your "Kicks" is through SEX instead of drugs -- which I, and many people at that time, would have agreed with. So it's possible that some of those who cried out in disgust at the Raiders' "establishment views" and "hypocritical stance" might have been a little less harsh if THEY had paid more attention to the words.
Paul Revere and the Raiders: "Kicks"