I used to like Kurz back when he was discussing things I had no knowledge of, but the moment they entered an area where I was experienced in it became clear that it’s primarily on the entertainment side of edutainment.
Nothing they say is explicitly incorrect, just vague and missing critical context.
For example, a video about the potential for a space elevator spoke of an alternative that would require aircraft to be “caught” by an orbital trebuchet style system. The reason the alternative was even conceived was because we don’t have the material for a space elevator given our planet’s high gravity well. During the discussion Kurz let it slip that the system would require an aircraft to fly at MACH 12!
If materials science has developed the technology for an aircraft that could fly that quick with atmospheric friction… We’d just be able to make a space elevator anyways.