Well, if the Cosmos series is clearly made with the intention to teach and educate, Ancient Apocalypse is meant to sensationalize and somehow shock you. Literally EVERY sentence in the series is accompanied by some cheap, dramatizing and sensationalizing sound effect. A stab, a hit, a deep bass rumbling for effect, it gets highly annoying.
And it's a shame because the chosen subjects are truly amazing and have enough consistency to carry their own weight through the series.
I "met" Graham Hancock on the Joe Rogan podcast and every time he was there he made a very serious impression, I regret he had to make Ancient Apocalypse this way and on Netflix. Even the title sounds like (and is!) clickbait. If you can filter all this out, you're in for a historical gem.

Well.... When Hancock is on the Rogan Experience it gets pretty out there. And I don't know how much I want to take him seriously....

.... but then... Göbekli Tepe rewrote a lot didn't it? That pushed the date back. Something was there before it should be there and it was organized and it was big.

And some of what he said in Fingerprints of the Gods sort of holds water.

I mean, geologists and archeologists, geologists and historians clash a lot, and one is trying to keep with a timeline that keeps getting forced back while the other one doesn't have that constraint.

So, where I am POSITIVE it's going to get Ancient Aliens insane as it goes on, I'm also pretty sure he should be taken a little more seriously.