I think one of the best things the alarmists do is say we only have ten years left. When those predictions are proven wrong again and again eventually people will notice the pattern.
Broadly speaking there's a long history of doomsday predictions. Credentialed members of academia or religious institutions have participated in doomsaying throughout history.
since the dawn of time its been possible to spin a bleak future at any point in history. In the 900s for example they thought the world was gonna end in 1000AD with the rapture.
These doomsday prophecies are always conveniently distant. You can tell people any scary nonsense as long as it's far enough away that everyone will have forgotten the details of your prediction by the time it fails to come to pass.
It's just the same as how we can show people today any number of doomsday prophecies from the past about how the world was definitely going to be wrecked by 2020, or 2010, or 2000, or 1990, but somehow nobody thinks they were serious back then... but then they take the doomsday prophecy about 2030 seriously.
And when it doesn't harken well move on to some other hyperbolic doomsday, this has literally been going on for thousands of years. Humans have constantly, hubristically , predicting the end of the planet and humanity based on the existence of humanity for millennia. They are selling, always selling.
I think the assertion isn't that the world is going to end 10 years from now. It's more that unless we pull off a miracle in the next 10 years, it's essentially going to end this century.
I guess that's not very surprising. If you're used to thinking 10k years out, you recognize the inevitability of catastrophe in a way that others wouldn't.
They are lying, they have been inventing doomsday scenario narratives for decades. I'm in my 40s and the lying started in my elementary school. They haven't changed the approach that much in all these years, I can clearly recognize the same lies from when I was 10 years old being peddled once again today.
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