It's "psychoactive" in the same way that caffeine is. That is, it's a stimulant. Using that term only serves the purpose of making it sound scarier. And it's far less addictive on its own than when smoked. It's not harmless, but it's also nowhere near as big a problem in itself as specific product categories and delivery methods, and no worse than any number of other things we're perfectly fine with people using.