[Diogenesian]

I think this is a severely compromised visualization but not actually misleading, either by design or in effect. Seems like they wanted to include the full picture - namely, that the 2026 spike is still less than the 2023 price when new, but doing all the data monthly would have been hard to read. Note that doing it all monthly would have made the derivative of 2026 more visually stark, so the way the graph is presented actually weakens their argument (albeit inconsequentially).

I think the best way to fix the graph would be shading or line texture to indicate the scale. The biggest problem is that the inconsistent scale is a surprise you only see upon close reading, after you've visually digested the trend. So the scale needs to be apparent in this first visual digest. (Sort of like how many logarithmic charts include thin axis marker lines in the body of the graph itself, so as to immediately inform a quick glance.)