For what its worth, that paper is referring to injuries to children using a style of machine that hasn’t been sold in the US since 1983. But point taken.
A washing machine doesn’t have the torque to seriously injured you. I have been reqatching old Mythbusters episodes and there is one involving a man getting spun while standing in a washing machine. They found that amy substantial weight stops a washing machine from turning and that it is easy to stop with your hand. The motor isn’t designed for that.