the point is that's a decision for the Greeks to make though.
If they democratically vote to print money / cause massive inflation / think incredibly short-termist as a solution to the problem, that's an option that should be open to them, but one that was taken away due to EU membership.
(admittedly, the 'best' solution here was for Greece never to have joined the Euro in the first place, but that illustrates the difference between economic benefits and political will)