Exactly.
I'm not sure why some think it's "hides and floor sweepings"
If you don't WANT it , don't buy preground meat, but don't make up things about it that simply aren't true.
My brother worked in a a traditional (European style) butcher shop for many years. He says some of the trimmings they are talking about using might be what a butcher would grind into sausages, but some might be what they sent out to be rendered/tossed. Either way, he made a face when this "pink slime" came up... and he is not squeamish. It won't kill you... But it's more suited as slop and we eat it up don't we?
