As it's very well said, never tell some method is not good enough unless you have another better than it to replace the same. Same goes with Modern Monetary Theory, which states you can print as much as you want if you are sovereign country and keep inflation in check you will never face issues. The problem is when inflation reaches double digit, stopping it becomes very difficult.

So what is the alternative which could be used or what are the possible modification or combination which can be used along side MMT?