The damage thing might be intended in the way packaged things intended to be swallowed say not to use if the seal was broken. I think it means if you open the new product for the first time, and it clearly had a transport accident and is soaked with unknown liquid and covered in white powder, don’t give it to your cat.

If it looks as expected when you open it, and you know later damage was caused by your household and is mechanical only, that’s fine. Like it’s fine to use the sour cream that had an intact seal when it arrived in your house, but if the first time you open it from the store the seal is cut, toss it.

I do not like this development. Angry upvote.

Yes, I am in favor of the label having a column for the whole can, but also not all cans are the same size, for example Coke has at least four different sizes of cans: https://travel67.com/2013/12/12/coca-cola-serving-sizes-and-an-unusual-pricing-system/

Is having two columns of information (one for the whole package, one standard size to compare to other varieties) offensive to people?

There is some value in a standard serving size so we can compare nutrient density between products that come in different sized packages. Often labels will have two columns on the label, one for a standardized amount and another column for the entire package.