It seems like that to me too. I keep hoping that it's just some cognition defect, that they're trying to be reasonable, that there's this one little piece of logic they stumble over... but the more I listen to them, the more convinced I become that they really do just want all of us to be extinct.
Yeah the environmental movement from the 70s has evolved into something like a death cult in its modern equivalent. Technology can no longer save us, but is in and of itself the problem along with industrialized civilization. Doubly ironic given how that movement killed nuclear power, and if we had actually built as many reactors as Nixon wanted we would've actually accomplished some of these now-arguably unachievable goals on climate metrics.
I'm being a little glib in that comment, but the sentiment is I think true and I wish they'd be honest about it. If they stated plainly that "we think in order to achieve what we believe are the required reductions in xyz, we have to decrease the human population by X% so less is consumed" I would actually respect them more. Instead the de-growth mentality is rhetorized up to look nice, but again it's just window dressing.