> Visually, this is vastly exaggerating the variation. Actual usage did not even double.

No, it is literally showing the exact variation of interest. If you think it's exaggerating the variation, you are not reading the chart. You are glancing at the chart, ignoring what it actually says in multiple ways, and imagining it has a baseline of zero, when it clearly does not.

Read the chart. What does it actually say?