We all know and bemoan "touristy" when we see it. It smacks of cynicism and inauthenticity to have another culture presented to you through a preconceived lens. Picking up a new language - or an introduction to one - shows you hunger for something more than something prefabricated.
What of the sway of Persian, or for that matter, any other language in today's world? It is language capable of 'selling' to an increasingly aware world-population that will be triumphant in the 21st century.