There is nothing even remotely resembling collapse of civilization in the IPBES or IPCC reports. So why do so many people say that’s what they are about?
I think it may be at least partly a misunderstanding of what the IPCC mean by “transformative change”, a misunderstanding which sadly is promoted in many articles in the mainstream media. If anyone says this, they haven't read the reports themselves, or at least not carefully.
The IPCC’s “transformative change” is not a collapse. Nor is it austerity. It’s positive, it’s growth in everything we value.