I also think that his obsession with the kinds of inverted reasoning, such as "anti-inductive markets" is serving an interest of his: by planting this meme in your head, you'll subconsciously apply it out of context, when his qualifications of reputation come up. He'll say "Oh but even if I had qualifications, you'd probably reject my claims, so I don't need qualifications". They (and his earlier co-author Robin Hanson) also like to reduce things to signaling, basically saying that education is just to show off and raise one's status by acquiring pieces of paper, but if you really want to get things done, it's more efficient to self-study and concentrate on the really important things, skipping all this mess that is education.

So if you eat these ideas at the right time, you won't find anything suspicious about him lacking any reputation, any qualifications. He's trying to sell you the idea that he's so much above the ridiculous ideas of the mainstream that he doesn't need to go among them an get tested by them, he tries to sell you that this is just signalling, the way a really rich person doesn't need to show off expensive items, or a big dog doesn't need to bark as much.

Another thing about the anti-inductive meme is that seeing the world thought these glasses makes you kind of paranoid. Because how can you know if the thing you conclude shouldn't be the exact opposite? You know, maybe the system figured out what you will think, it simulated you and now you are supposed to outsmart that system, etc. When in reality, the overwhelming majority of everyday things are straightforward and inductive and rarely go deeper than 1 or 2 levels of "simulating the other". But his focus on the superintelligent being makes you think subconsciously that this is the nature of the current world as well, and a lack of qualifications should actually be seen as a proof of skill, not as a counterevidence.

Maybe you say nobody would think that, but I did, some years ago. I got sucked into his writings and I was gullible. Since then I have learned a lot from other sources and can see much better how he rips off previous ideas, repackages them and creates a crazy ideology.