They got it all wrong!
Not sure if it makes things better or worse but, according to the original game's story as told in the manual, Goomba's are former Mushroom Kingdom residents transformed and turned evil by Bowser's magic. So are the bricks, coins, and everything else. I believe they were once the same as the "Sorry but our princess is in another castle" guys ("Mushroom Retainers" including Toad).
I hated all the unnecessary camera movements.