Aunt Jemima and Uncle Ben in and of themselves do not exhibit racism, but a certain paying demographic today frantically sees color first. These images of previously accepted products apparently are an affront to that demographic now. As a Latino I grew up enjoying Aunt Jemima's pancakes made from that box and not once did I lose respect for or see my Black neighbors as anything different than us.
Like any business, in order to stay afloat they must sell a product that the paying public accepts and buys. If the product was making kitten sandwiches and selling them to a select clientele who would pay for that, they would. Look at China. They have dog and cat meat cooked and ready to eat off the hook in markets. A bit exaggerated but you get the picture. So no, they're not racist extreme, they just don't want people to stop buying their product.