Every time I watch this, I think of how we fall into listening to "doctrines of demons" only because we aren't being discerning. This is a good reminder for all of us to start paying more attention.
Kind of makes you realize that we need to think of our spiritual life the way we think about food we eat. We can eat a nutritious bowl of soup without realizing that there may be particles of poison or rat droppings added in - accidentally or on purpose. We have to start watching for the poison.