Re "I'm going shopping"

This particular question and explanation frustrate me a bit because I've seen it so often in other "teaching" apps. It seems to me, perhaps incorrectly, that the lessons should be geared toward the student in NOT assuming that the student knows or will stop to look up the many nuances of what type of shopping one is doing, especially since it often will not be indicated. Since there are two such distinct intents for these "going shopping" phrases, it seems to me that neither "faire les courses" nor "faire les magasins" should be marked incorrect. "The sales are on" does not exclude non-personal-goods locations. In this instance, perhaps a hint needs to be included.