I'd argue that the problem isn't money per se but what the government does with that money. The Quantitative Easing approach is a good illustration. Rather than investing in the real economy to deal with the 2008 crisis, governments bailed out the investors in the hope that they would spend into the real economy.
This is the #Neoliberal approach, and it isn't working. Before the 70's governments invested directly eg; building the Trans Canada Highway and St. Laurence Seaway here in Canada. MMTers would agree with this (as well as taxing back what they're spending into the economy).