Good for you for not taking it personally and calling them out on their complete irresponsibility! I like to make light as much as the next person. Probably more. But there are limits.
You're right, there ARE going to be a lot of emotionally vulnerable people taking that "quiz". How could they not realize that?! And if they DID? There are many choice descriptors for people who have such disregard. Oh, where to begin?

I won't even go there (I've totally got a "thing" about anyone considering my "visit" as marketing success or sign of interest), but thanks for the heads up.
Keep us posted, ok?