Lowflation and supply-side policies

Why do European central bankers point to the lack of structural reform as an justification for doing nothing on the inflation front? 

If anything, a positive supply shock should depress prices. Hence, the lack of it is the opposite of a good explanation for lowflation.

If the ECB won't act on lowflation to keep pressure on EU governments to implement reforms, are we still living in a democracy?

http://www.ft.com/intl/cms/s/0/15ad701a-22cd-11e4-9dc4-00144feabdc0.html#axzz3ANmjjmlh