I think I get what reddit is saying, but I have the advantage of working with haskell many moons ago and therefore the concepts are not new to me. The reason I can sympathise is that even though I can read Erik's homework questions and immediatly know the answers, when I watch through the explaination, I immediately think of what scenario it could apply to. So with the zip function, I couldn't think of a use of converting two lists to a list of tupples, as data is never that precise to make a perfect match. (maybe to many outer joins in SQL dealing with fuzzy logic) So with all that said, I think it could possibly help a subset of us, if Erik could also include some quick examples of application of a function or two to assist in the learning process. I think that is what reddit was alluding to with the small game comment.
Maybe it's just me, but I've programmed in so many languages now, that comparing one to another to help learn the new one become information overload and I tune out. By seeing something in it's own right, rather than a reflection of something else, I find it easier to invent new things using it. eg. I wrote recursion in C for my first assignment. Not because I understood what recurrsion was, but that it looked like the simpliest and least amount of code way of solving the problem; and especially as it didn't core dump like my previous attempts.