But science based on climate has constantly been changing.
In the 50s atomic energy was going to mutate life and they knew it for absolute certainty without a doubt. In the 70s we knew for absolute certainty without a doubt nuclear energy was sending us into an ice age. In the 80 it was all about we knew for absolute certainty without a doubt the ozone layer would be destroyed and the planet baked. Now we're certain beyond a shadow of a doubt c02 levels will kill us all.
So it isn't that we that the data is new, it's all together seperate contructs of our demise. They every so often changes what will kill us and how and just completely forget about what was going to kill us before.
Atomic energy, nuclear energy, ozone, c02, politicians always manage to have a new "scientific Boogeyman" exactly what they need it that average people can't see, or prove, or understand completely on their own and we have to just trust them.
And calling people names is also really low and pretty much makes you not worth even considering.