It’s important, when you’re making graphs, to think about the story you want to tell with the data, and what type of graph, and what features of the graph, will help you tell that story.
Likewise, when you’re looking at someone else’s graph, we all need to apply that critical data literacy and look at the scale on the y axis, as well as checking the labels, finding out the origin of the data, and considering whether the graph is accurate, a valid way to display that data, and what story it might be trying to tell you.