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You appear to attribute all outward intellectual achievement to latent g. But the correlation between g and such achievement isn't 1. A really high estimate of that correlation would be 0.70, so was Einstein a 4 SD physicist of his day, his expected g would be 2.8 SDs, which is 142. 142 is extremely intelligent and a focused person at that level can achieve great things. It's been found that the correlation between intelligence and chess is as low as 0.24.
He lived a long time and did physics as a profession, but yes he also had hobbies. This is typical of people in the 140s IQ.
I'm glad you pay more attention to statistics than most psychiatrists. Maybe one day you can help replace the DSM with a quantitative approach. Have you read Eysenck on general psychoticism? It's in his book on genius.
My tips for you on intuiting why you probably over-identify people being over 150 IQ:
high IQ is exponentially-increasingly rare because the bell curve is thin-tailed. Shrinkage is optimal; you would have less error if you shrink everyone's intelligence towards the median by 10% or so.
Flashy outcomes are a result of intelligence as well as other factors like work ethic and fortune. Many people think a famous businessman, scientist, or writer has an outrageously high IQ, because they think their preferred intellectual status markers correlate at >= 1 with intelligence. They don't.
The CEF (conditional expectation function) of g on outcomes might not be linear. The IQ wealth CEF is probably concave for instance. Nonetheless, lots of people believe that Elon Musk must be a genius, but his real intelligence is probably top 1% or 2%. He's exogenously fortunate and an outlier in other ways, like commitment to business, and these explain his wealth jointly with his intelligence.
Wasn't it a big thing though in statistics that often a phenomenon is nicely described by the normal distribution in the fat part, but has much more outliers than the exponential shrinkage of the bell curve tail predicts, and so there are all sorts of modified distributions with wider tails. Is it well known that intelligence isn't one of those?
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