Your approach looks quite unscientific to me. What empirical evidence do you have to support this? How would you go about codifying these ideas into a proper scientific theory?
I mean, I don't really disagree; it's not a very scientific theory right now. It was just a blog post, after all. But if I was trying to test the theory, I would probably take a bunch of people who varied widely in writing skill and get them to write a short piece, and then get an external panel to grade the writing. Then I would get the same people to take some kind of test that judged ability to recognize rather than generate good writing (maybe get some panel of experts to provide some writing samples that were widely agreed to vary in writing quality, ...
A lot of Less Wrong frames becoming more rational in terms of correcting biases. When Scott Alexander is asked how he does it, he doesn't seem to actually have an answer-- if I recall correctly, he's just said that all he's got in his life is his job, his girlfriend, and his blog, which doesn't begin to explain his remarkable flow of interesting posts.
It's a good thing to have fewer and weaker biases, but it's better if de-biasing can be applied to new ideas which have a good chance of paying off.
Is there LW material about creativity that I'm not remembering? Any recommendations for information about creativity elsewhere? I'm especially interested in material which you've seen help you or other people become more creative, as distinct from material which has been plausible and/or fun to read.
Edited to add: While I think this is a generally applicable topic, I also have a local interest. I'm fond of LW, but it seems to be in a doldrums, and at least part of the cause is a lack of interesting new material.