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Dinosaury time periods were often much hotter and much more filled with co2.

They thrived. Plants thrived. The danger is in the change part.

We are not dinosaurs.

That's true. We're warm blooded. That means we're far more capable of dealing with different temperatures than dinosaurs will ever be.

(yes there are cold-blooded mammals and warm-blooded dinosaurs, but they're rare exceptions)

Warm blooded (endothermic) dinosaurs are currently thought to have been the majority, or possibly even the entirety. Crocodilians (alligators, crocodiles, etc) likely diverged from endothermic dinosaurs, as they have features shared with other endothermic animals and not with ectotherms (cold-blooded animals) such as 4-chambered hearts.

The article contradicts your post.

The article is gibberish.

No, it's unspecific, leaving the reader to assume.

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