There's a brief sponsor message a few minutes into the vid. And I agree, he has no tech saavy, I have to change from maxres to hq by hand in my YT template, each time I post one of his.
Very interesting video. Slightly off topic is that many of the durable ruins in Rome today are the concrete and brick cores of buildings whose marble facing was recycled for the monumental buildings of the Renaissance. Likewise much bronze decorative work and the sheathing of the Pantheon dome