I only watched a couple of minutes of this and the guy's "argument" seems to be "I don't believe it, so it never happened". Why wouldn't there be a railroad station in a town of 3000 people, for example? There was one in my nearest small town of the same size for about a century. Why couldn't power tools have been developed a whole 100 years after the Industrial Revolution? Batteries had been invented thirty years earlier. Is it incredible solely because it took place in the nineteenth century? Despite the contemporary propaganda that the Victorians were stuffy and backwards, their era was one of huge progress -- they used to congratulate themselves on how advanced they were compared to their forefathers. The reason why he finds this stuff incredible is because our culture has declined so much that these things are no longer possible because of bureaucracy, diversity etc.
There's a huge problem with AI in that gullible people think it is sentient and here to liberate us from our delusions in some way, when in reality it's at best a glorified search engine and at worst subject to all kinds of inherent "hallucinations" (not to the mention regurgitating the political biases of its programmers). There's also the problem that all the lies we were taught in school have not only created legions of dumbed-down students but made some of them cynical enough to believe that everything is a fiction designed to manipulate us. This destroys the entire point of having a civilization, which is to accumulate knowledge in order to make things better for the average person and to take pride in our legitimate accomplishments