I kind of hate the way this article is titled, considering that literally all the quotes from professional economists involve them saying "oh, this isn't very radical -- we've been saying this for 50 years and nobody has listened".
Dick Cheney famously argued that "deficits don't matter". Donald Trump said "you never have to default because you print the money".
This has been their M.O. since the 1980s:
Republicans have long recognized how to use the deficit as a
political tool. In the 1980s, Ronald Reagan ran up historic
deficits, mostly through an unprecedented military buildup
and tax cuts for the wealthy. The Clinton administration,
egged on by the Gingrich-led Congress, ushered in fiscal
responsibility, but George W. Bush again obliterated that,
with another helping of a tax cut-and-military agenda that
Republicans willingly supported.
When the Obama administration came in, the narrative
switched again, with Republicans demanding fiscal probity,
even amid a time of financial crisis and recession.
-- http://www.thefiscaltimes.com/Columns/2015/12/04/Slick-Game-Republicans-Play-Your-Money
If you read the political commentary--on both the right and left--it's the left-wing Democrats left consistently preaching fiscal responsibility and paygo budgeting. But most people still perceive Republicans as deficit hawks and Democrats as profligate spenders.