How can a deflationary model be bad for the economy? People are not getting poorer after every inflation increase every year, so they have more disposable income to spend on the economy. The people who are saying this have no clue or they have not lived in a country like Zimbabwe or Venezuela where hyperinflation nearly destroyed their country and their economy. 

A lot of the people are getting some advantage from a system that are based on inflation, so they want to stop Bitcoin with a deflationary model.