The article talks about how Terms and Conditions are in all-caps due to "legal traditions". Is the all-caps a legal requirements? Otherwise, I am going to go with the assumption that Apple and other companies put their Terms and Conditions in all-caps precisely because it makes them hard to read.

Apple have enough experience in typography and certainly haven't bowed to tradition in that arena. There is no reason they would suddenly start doing it for T&C unless it suited them.