I am not a AWS user but I am familiar with what several of the AWS services do. I looked over the quiz and I could not answer even a single question.
I also think the quiz is to prove a point. Those icons are not helpful at all. The opposite of the MS Office icons which are so recognizable all other office suites copied the color scheme.
I'm an AWS user, I've been using their service for almost 5 years now. I also had a hard time with many of their questions. I agree completely with your assessment.
I was happy that they finally added a simple search tool for their tools on their homepage.
It wouldn't be a very sustainable business, but you could make good money selling a chrome extension that cleans up AWS similar to what Reddit Enhancement Suite does.
That might just be the most dangerous extension ever, or at least one that could get very messy very quickly if it was hacked. Or someone would be willing to pay big money to have it subverted, looking at you cryptonuts.
I also think the quiz is to prove a point. Those icons are not helpful at all. The opposite of the MS Office icons which are so recognizable all other office suites copied the color scheme.