The fear is that falling prices will contract the economy, because people will not spend today if they are going to be cheaper tomorrow. I don’t have any sense as to whether this fear is reasonable or not.
It's really frustrating to wade through this sea of comments that includes a guy who is saying unironically that living in a tent while starting a business is a viable option for most people, and a whole bunch of other people who just don't seem to get the idea that the economy is literally people, and if it doesn't work for people, it doesn't work, period.