Deflation is far far far worse than inflation. See Japan for reference.
Not really, but in a Debt Based Monetary system it is bad for those that believe in Debt Management, those that don’t usually do quite well because they don’t BORROW!
With that being said it would take a Massive amount of deflation just to get back to where we started in 1964 when LBJ began this War on the Family, which incidentally forced President Nixon to officially declare the USA Bankrupt on August 15 1971. Up until that point we were a Cash Society, Credit Cards did not exist.
Japan is a terrible and false example. The Japanese economy has never been free market. Its economy is suffering from government intervention, which is causing negative growth aka contraction.
The Japanese are the mad hatters of government intervention, not much better than China on that count and possibly worse. All the spending must be paid for. The Japanese economy has been and continues to be notably anti-entrepreneur.