Modern Monetary Theory is something so simple yet so complex all at the same time, it does really involve divorcing your mind from how you personally interact with money to ultimately grasp how cash works at an economy-wide level.
A lot of supporters of the theory push it as a cure-all to any economic ailments, and you know what with the money printers firing away like they are right now we may finally get a chance to find out if they are correct, but in reality, it’s not a prescription to fix a broken economy as much as it is an insight into how modern economies work.