Exactly. With Lightfoot's datapoints being essentially entirely measured during the Pandemic (and the known, but still poorly understood, insanity of fluctuation in certain oddly specific crime rates nationwide during the Pandemic), and that roughness of granularity, I recommend rejecting this chart as useless.

(This goes beyond the notion of evaluating one term of a mayor on 3 datapoints of a single crime metric compared to many more terms and many more datapoints of a previous mayor -- one basic problem of granularity is that each datapoint has a certain sampling bias depending on the cutoff -- you can see this yourself by recalculating the murder rate from daily statistics, but use a different year-to-year cutoff date -- that's one type of this bias. It's not a problem with more datapoints depending on the metric, but here you have only 3 for Lightfoot.)