This is nonsense. Saws that chop off fingers aren't defective - the user is. It's a simple argument to make. Saw Y doesn't have safety features and you use it

This is nonsense. Saws that chop off fingers aren't defective - the user is. It's a simple argument to make. Saw Y doesn't have safety features and you use it at your own risk of injury. Saw X will stop cutting the moment it detects a body part. You also use it at your own risk of injury.