A couple of things to keep in mind.

This is a transcript of a lecture. Things like lectures and interviews tend to rehash points because they are directed at different audiences.

Paranoia doesn't automatically make a person wrong. It means that they tend to misinterpret the motivations of others and that misinterpretation leads them to over estimate the magnitude of the consequences. Yet the consequences still do exist.

Overall, that lecture does make valid points. But I do cringe at the degree of paranoia in some of his fictional works (that try to make similar arguments).