I feel your pain in general with the quiz questions here in C3. I had to take multiple tries on quite a number of them. The good news is that you can retake them as many times as you like with no penalties, although the 3 tries in any 8 hour period can be a pain in the neck in that scenario.
But I disagree about the particular example you’ve chosen. I think you’re just “over-reading” the question. Of course that’s not the only thing you need. Yes, you also need a lot of data, but that’s always true basically and the question is not asking about data. You also need to know python and you need a powerful enough computer to run the training and you need the power grid to stay up and yadda yadda … But the question is do you need hand designed features? No, you don’t.