Comment by Lutger

You make two mistakes here which are very common in this topic. One, just because there have been plants where there is permafrost before, doesn't mean there is nothing new about this event. Everybody who studies a little bit about climate change will soon learn that the real problem isn't the change perse, its how fast it is happening. And that is also quite unprecedented.

Second, and most fatally, yes there was a lot of vegetation there. There was also a time when there were plants on the antarctic. The sea levels were 20 meter higher back then, which may give you a clue it could be a slight problem, as you yourself indicate.

There were mass extinction events before. Natural or not, some people might say they would feel humankind going extinct or almost so is exactly what a catastrophe is, pointing out something similar has happened before doesn't make it any better.

So no, the narrative doesn't fall apart. Furthermore, it is not a narrative in the first place, it is a risk assesment based on scientific understanding. There is no drama, just facts and theories. The hand-wavy 'it is all natural thus its good because we live in a just world and that magically makes everything okay and eco-logical and stuff', now that is a narrative.