If austerity is not rewarded electorally, even when it is "successful," it makes sense for it to be disparaged more violently when it is not successful-- such as in the case of Greece.
While Syriza created neither the economic crisis nor the refugee crisis, its incompetence and opportunism have worsened their impacts on Greece and have undermined the country's position within Europe.
The debt-ridden government promised to cut pension funds and raise tax rates in exchange for international bailout funds.
The former finance minister is attempting a second act.