Your article lists a few instances of target in an area failing at rates like 9% or 2.67%. The Guardian article shows dollar stores all over the place caught thousands of times and getting error rates like 76% 68% and 58%. One dollar store in Utah was caught cheating their customers in 28 inspections in a row! Maybe the News & Observer could have dug deeper into the Targets in your area and found violations of a similar scale, but they didn't, so from the information we have these are extremely different circumstances.

If Target (or whatever the hell a Sheetz is) were ripping off their customers to the same extent that these dollar stores have been doing it then they should also face meaningful consequences for that.