I understand what you are saying, but this can hardly be compared to salvia. The thing about salvia is it never posed any real threat so it was easy to forget. Salvia is a plant that takes you to another universe for a couple minutes.. these are white powders that can get you geeked for days on end and people are commuting crimes under the influence of.
Even though the public forget about salvia, good luck getting them to forget about the baggies of white powder at the corner store. Two different beasts..
If you do a Google news search for bath salts the front page is all results from the last 48 hours.. salvia has never had any kind of equal media attention.
I guess nothing wrong with being an optimist though.