Pretty much as soon as temperatures reach the point where permafrost naturally starts melting, then they've also reached the point (or soon will) where local fl

Pretty much as soon as temperatures reach the point where permafrost naturally starts melting, then they've also reached the point (or soon will) where local flora (including microorganisms) start soaking up all or most of any emitted CO2. (AFAIK, the same holds true for methanotrophs and methane, too.) So while everybody likes to talk about exacerbating factors here, almost nobody talks about mitigating factors, which are considerable. Also, the scary picture shown is of the Batagaika crater, and while they state that the permafrost there has been melting since the 1960s, they fail to mention that this was initiated by tree removal at that location (not sure what the story is there), so hardly a naturally occurring event. Also, that's 50 years' worth of melting you see there, so hardly a speedy event, either, and certainly not something which happened practically overnight. All of those trees still surrounding the area are no doubt soaking up as much of any freshly-emitted CO2 as they can get, too.