The second paper shared by the GP is actually just about as dumbed down as you can feasible get. The problem is that A) it uses some basic jargon, because it's

The second paper shared by the GP is actually just about as dumbed down as you can feasible get. The problem is that A) it uses some basic jargon, because it's fair to assume the only people interested in the result are people who understand the jargon and B) it's describing a completely impractical problem, designed to maximize the difference in performance between a quantum and classical computer rather than do anything particularly useful.