They could neither fix the problem with the policy tools a country with its own currency would have, nor did they have the automatic support from a central budget a region or state of a country would have.
Destroying their peoples lives with inflation so they could continue the parade would be even worse for both Greece and EU as a whole.
https://www.statbureau.org/en/greece/inflation-charts-yearly
I know you permanent money people are keen on a dog eat dog world where you trust no one and see everyone around you as a competitor to defeat.