Current generation e-cigs can supply up 200 watts just for vaporizing the E-liquid. That's almost 1/3 of a horsepower and can be used to create obnoxiously large clouds. Many 'Vape Shops' now even sanction tournament-style 'cloud competitions' where 2 participants stand back to back and try to blow the biggest/longest/thickest cloud: https://youtu.be/9oIo_nKOGlQ
You say that like its a bad thing. The only thing going on here is you're expressing your puritanical urges. "People are having fun, there must be something wrong with it!"
