The chart in the Bloomberg article is pretty great. Delong is left-leaning by the way, meaning not just conservatives see this as nutty.

Left leaning Paul Krugman sees MMT as nutty

https://www.nytimes.com/2019/02/25/opinion/running-on-mmt-wo...

Even further left, Doug Henwood is down on MMT

https://www.jacobinmag.com/2019/02/modern-monetary-theory-is...

It's not just conservatives who are down on this. Left and center-left economists see MMT as wishful thinking.