The “line graph extending beyond the region of the plot” thing seems like a purposeful and perhaps powerful data viz choice.
I tell my students that your aesthetics should emphasize the message of your graph. This choice emphasizes that this isn’t “normal”, it’s quite extreme.
ALT A multi-faceted plot from the NYT Covid page, showing cases, deaths and hospitalizations as overlapping line graphs. 9 states/regions are shown in a 3x3 grid. From top left to bottom right: US, Rhode Island, New York, New Jersey, Massachusetts, Connecticut, Delaware, Florida, and D.C.
Many of the plots has a red “cases” line that extends above the region of the graph, even overlapping with titles outside the plot.