Yeah it looks like a big fall, because it is. But that doesn't make it look like its worth nothing.
The area under the graph changes by like 80%, while the actual value changed by only 10%. Even mathematically speaking, it's deceptive.
If you misinterpret what data is showing, sounds like your own damn fault.
If someone constructs a graph in such a way that an observer is likely to misinterpret it, they are responsible for representing the data in a deceptive fashion. Yes, the numbers aren't changed, but the way that the data are actually plotted has a huge impact on what the graph actually says.