The reluctance of degrowth-critics to define growth makes for poor debate

From the article: Recently there’s been a wave of arguments defending economic growth from a leftist perspective. People are increasingly reacting to the rise of ‘degrowth’: a diverse movement calling for, among other things, scaling back the total material and energy use of the global economy.
One particularly vigorous example is the work of Leigh Phillips, where he accuses degrowthers—who he claims have become “hegemonic” (file under: things I wish were true but aren’t)—of undermining classic leftist pursuits such as progress, well-being, and strengthening of social services. Similar arguments could be seen in a recent article that appeared in Jacobin Magazine, in which growth was posited as necessary for progress. And Keynesian economists like Paul Krugman have come out against degrowth, claiming that economic growth is actually necessary to address climate change, and lumping degrowthers together with the Koch Brothers, as they both seem to seek to dismantle the state.