The graph shows exactly what it is designed to show in an effective way, and they explain it clearly in the text.

It's one of the clearest and least misleading graphs I can imagine. Starting the Y-axis at 0 would only be less effective at making the point. The Wikipedia section that you link recognises this.

Every graph is misleading if you assume it has properties that are not there.

I didn't find it misleading, considering the text before and after. The graph is clearly showing the Y-Axis and if the X axis was stable for long enough it correctly illustrate the bump. Of course I read both X and Y axis legends.