Whenever someone tells you "the only solution is..." You can just write them off. There's never only one solution to any problem, let alone one where the problem is purely speculative.
Did he change the article? Here's what I saw at the end:
>If monetarism goes, then the only peaceful political solution to the crisis will be a massive social Keynesian program like the Green New Deal. If this happens, those who hated Obama's mild stimulation packages will look back at those days with nostalgia. A brave New Deal will necessarily place democracy at the center of society, not markets.
The New Deal may have been heavily inspired by socialism, but I wouldn't go so far as to call it communism/socialism.