The EBT crowd is why I avoid Walmart like the plague. These people stand out like sore thumbs: they look, dress and act like total buffoons. But self important and entitled buffoons. And they are exceptionally rude & nasty to the poor Walmart cashiers trying to help them.
Your observations are spot on.
My local WM is convenient and cheap so that is where I do the bulk of my grocery shopping.
If it were not for the hordes of rude, entitled buffoons and their spawn, the place would be almost deserted.