Purpose of the study? I suspect it was the same as the H2O one mentioned earlier in the thread. It can show folks their bias against Arabic in general akin to how many are biased against anything “chemical.” Along the way they can learn some trivia they didn’t know and learn not to generalize overall.
All good things in my mind.
The H2O one always goes around school. Hopefully this one will too. It’s very good for teens to learn to look below the surface of what they see.
If someone didn’t know before the question, they are unlikely to forget after. No harm done at all.