I think this blog post doesn't quite understand Andreessen's position. In fact, perhaps Andreessen doesn't understand his own position, which makes this even worse.

Freud isn't the issue; Freud did not think the unconscious was "inside," he said the unconscious is the metapsychological apparatus which is the result of primary repression (something we all experience at a young age, since we don't remember, for instance, being potty trained, but we don't go around shitting ourselves, at least not intentionally). The ego is, at the most basic level, the skin. Its inside relatively to the outside, but there isn't a hidden subject hiding within it, you can and often do affect the inside of the body through external means, and vica versa.

It was Descartes who originally came up with the idea of a separate "inner" world vs a "outer" experience, the thinking ego-cogito and what it perceives in extension in the world. This formulation has been troublesome for philosophy hence, but in fact it was Freud (and not Heidegger) who succeeded, after a long line of attempts in the 19th century, in radicalizing the ego-cogito and decimated the notion of "inner experience" in the 20th century, which became key to the developments of both psychology and philosophy (hence the ironic reference to the Vienna circle). And more than Freud, in Andreesen's case, it was Nick Land, who took Freud even further, and expanded this idea to refer to unity in general,so that the 0, even that of the computer programming, the empty unity, became its own activity in a broader economy of information and energetics, and this 0 was both that of the psyche-soma, and that of the symbolic movement in computer logic. And that is what Andreesen is trying to refer to, but he is not very well read, of course, he spends most of his time working in tech but he reads this sort of thing and talks to a lot of people who are more well read than he is.

You have got it right (though IDK what you mean by unity and zero), the author is even less well read than Andreesen so their arguments make no sense since they don't have this background.