So, to be clear, you guys are denying the world is getting warmer and is causing things like rapid ice melt? Or just the causes of it?
Or you just don't really care about the causes and "think" everything is just going to be hunky-dory?
FSD... 1 degree celcius will have massive changes but we could probably survive it as a species and society. However when you talk about +4 degrees... the world as we know it will be a dramatically different place. The southwest and great plains will nearly be uninhabitable (due to drought and extreme temperatures), coastal cities will be flooded by rising seas and battered by extreme storms. The overall global weather will be extreme due to dramatic changes in oceans temperatures and thus current patterns. Fish stocks will plummet impacting a huge percentage of the population worldwide that depend on the sea for their food (and economy).
The good news is we can mitigate and lessen the rise in global temperatures by changes to our processes, behaviors, laws, economies, and infrastructure. But it has to be now and it has to be serious. There isn't time to mess around with weening off (ensuring continued profits for established industries) or slow transitions. It needs to be quick, decisive, and widespread.
Otherwise...
Then again, you don't really care about everyone else, right?