MMT is the idea that inflation is the result of government spending, rather than "bankruptcy" or people being unwilling to buy US government bonds. And in particular that limited productive capacity will cause inflation. So if anything the past years show that MMT was exactly right all along.
How does Sri Lanka correspond to MMT more than what the proponents of MMT say? Can you be a bit more specific?
Edit: for example, Sri Lanka's outcomes are exactly what have been predicted by MMTers, and Sri Lanka took exactly the opposite of what MMTers have been recommending forever:
I don't know what it is about MMT but it always seems like people are intentionally not listening to what people say, and then inserting other words in their mouth. Marxists like Henwood are particularly prone to doing that, for example. Critiques of MMT seem to be based on intentional misunderstanding and misrepresentation.
