Yes, that’s what they meant. I thought the factoid was quite well-known by now.

Economic growth is becoming decoupled from resource use. The problem is that it’s agonizingly slow, so that the decoupling remains stubbornly relative: the resource throughput is still going up, just less quickly. The holy grail is absolute decoupling. No sign of that in sight, notwithstanding optimistic predictions about “green growth”. This lack of actual progress is the main argument for dumping growth as an indicator.