My main takeaway was that the fear I had of a methane-caused runaway warming was me and not science. That means that humanity will make it, maybe relatively painlessly, maybe with a good more trouble, but things will work out.
You are probably right about the overall impact of methane release, but I think your conclusion is largely a matter of faith rather than analysis. I certainly see millions of people been directly impacted by climate change in adverse ways and there is already significant migratory pressure within Africa due to climate change. Conflict and famine are somewhat inevitable on a local level, and it remain to be seen if the developed world will escape such outcomes.