Is he stupid or just overestimating his own intelligence? Because I wouldn't call him stupid on his own, just egotistical
Well, he's really all of those things. I made a post earlier with the evidence of this, but he's admittedly average intelligence or below (years later claiming it's actually much higher), he does poor on many metrics relating to intelligence (grades, standardized tests, dropped out of college, he failed his driver's test 5 times, etc.), and he even said on the IQ test he performed worst on the subtests most correlated with actual mental ability. The problem is that Rudyard is involved with the dissident right enough to know that intelligence is extremely important in determining life outcomes, particularly if he wants to be some grand intellectual, because no person of average intelligence is going to become a revolutionary thinker. He clearly wants to be more important than he can possibly biologically be, which is why he supports extremely fringe opinions about IQ not measuring intelligence and endorses the completely unfounded hypothesis of multivariate intelligence to find some way to claim he's as intelligence as he thinks he should be.
He clearly isn't completely retarded because there's some information in his videos that is correct it's just mixed in with crazy takes and random stuff in-between. It's almost like all he really knows is just basic historical facts and for some reason thinks he an expert on everything there is about history, philosophy and culture which is why his videos are so laughable.
I definitely agree, and it's mostly a product of him reading so much. He pretty much regurgitates the information from any book he reads (as long as he agrees with it) uncritically in his videos. Rudyard reads tons of book so inevitably he's bound to get a lot right since many of these books are written by people who know what they're talking about, but he lacks the critical thinking ability and general intelligence to properly assess these works or go into depth about them.
As an example, his entire video of "How Death Creates Everything" is primarily based on the book "The Worm at the Core: On the Role of Death in Life" by Sheldon Solomon, Jeff Greenberg, and Tom Pyszczynski. The problem is that the book is just a reiteration of the authors' work on terror management theory, which is derived from Freudian psychoanalysis, and has greatly diminished in significance due to their experiments have failed replication 21 times. From
the wikipedia, "In addition to the criticisms from alternative theoretical perspectives, a large-scale attempt by Many Labs 4 to replicate published findings failed to replicate the mortality salience effect on worldview defense under any condition.[61] The test is a multi-lab replication of Study 1 of Greenberg et al. (1994).[27] Psychologists in 21 labs across the U.S. re-executed the original experiment among a total of 2,200 participants." Keep in mind, I just looked up the author of the book to get some context and found all of these criticisms in maybe a few minutes, so this not some obscure hidden knowledge Rudyard would never have found if he simply searched for a little bit.
People believe he's smart because he reads a lot of books and can list a bunch of facts, but his thinking abilities are laughable if you pay any attention. He fails to ever elaborate on anything in sufficient depth, to the point that I don't believe he can even explain why he believes certain things, such as when he failed to adequately explain why he believes race is real other than saying his friends who are experts believe in it or when someone asked him to define God and he said that everyone knows what it is so he doesn't have to explain it. Furthermore, he constantly contradicts himself because the terms he describes are so vague they can apply to almost anything, and he often will just make up numbers/statistics or claim that every statistic he doesn't like is manipulated Soviet Union style.
Rudyard crashes out on a guy on twitter after he thinks the guy called him poor. For some unknown reason, he also mentions that he's 6'4 and inadvertently brags about how he's hiked the Appalachian trail and ran a social club in LA in the very same statement which he says that he won't brag about it.