Just a friendly note: this visualization means nothing without context, and is far from "obvious". Unfortunately, I'd place this in the category of "things that are obvious to people who already believe it". Is there a better way to go about explaining your idea?
To paraphrase, this is a simulation which places candidates and voters on a two-parameter preference space. This is useful because two dimensions are easy to visualize, but the same intuitions apply to higher-dimensional spaces.
Each point is colored to answer "which candidate wins when the popular opinion is normally distributed about this point?". That means the fractured visualization shows IRV's non-monotonicity, and how even when popular opinion is close to a centrist candidate (here in red) it might be that the voting system results in the election of an extreme candidate (green).