I am not sure whether "universe is rational" is supposed to mean that (a) the universe has a relatively short description which could be understood by a mind, or that (b) the universe itself is a mind, specifically a rational one. Seems like the meaning was switched in the middle of an argument, using a sleight of hand.

Regarding the "Universe is rational"-strawman: I think the mistake which the video is trying to point out, is the mistake that a description of the universe is the universe. When it is only a description, same with anything. It is language and that is the limitation.

So for those that believe the universe is for example physics, instead of our projection, that's the flaw I think. It's simple, ask a person if gravity is real, after they respond "yes" ask them, is this not a human projection (your projection) upon the universe? What is the real universe?

What I wonder is what lesswrongers think of this strawman if it wasn't one, an actual argument towards someone (rationalist in this context) who made the statement gravity is real and not a projection of mind: "G R A V I T Y and everything else which is occurring to me in consciousness"

(b) the universe itself is a mind, specifically a rational one. Seems like the meaning was switched in the middle of an argument, using a sleight of hand.

I'm not sure what you mean with this, because "Universe is a mind" seems more of an argument then stating the opponent believes the "universe is rational" (the strawman) like "What you think is the universe is your mind projection of labels and symbols yet you're not aware of it"

In summary, my impression is of muddled thinking, and of feeling superior to the imaginary opponents.

Well. I think usually what we see in others is just a projection of our own mind. "The world is your mirror"

Actually, maybe the opponents are not imaginary -- there are many fools of various kinds out there -- it just has nothing to do with the kind of "rationality" that we use here, such as described e.g. by Stanovich.

But is there someone who can refute the argument made in the video, if you had the argument which the strawman was?

Otherwise it seems to me "Only fools would make the argument of which the strawman was targeted towards".