Grocery stores are making record profits. Do they really think they are going to voluntarily cut prices? They know there will be no oversight under trump (not that Biden did anything about price gouging). Prices are going to go up even higher.

Your reading comprehension needs some work. I was basically agreeing with you, but you seem more interested in being outraged, so whatever…

https://en.wiktionary.org/wiki/carnage

5. (figurative, slang) Any chaotic situation.

It also has slang usages, but I agree that in this context it shouldn’t have been used in the headline.