that may be true, but there are many misconseptions about salvia, for instance, most people believe they should spray their salvia plants, which is truly incorrect.
Beyond that, salvia has many odditys that most plants dont, and there are also other things you can do to get your plants bigger, or other ways of managing them so they dont get out of hand.
The list is somewhat similar to marijuana, but getting the potency of the leaves to increase is still unknown.