It seems their thinking is part of what led them to JS in the first place, which is a bit of negative and maybe they had some ideas reinforced there. But I also think they were some of the more extreme ones to begin with. They obviously didn't internalize JS's concerns about risk at all lol.
A Jane Street trader's risk tolerance does not equal Jane Street as a whole's risk tolerance. When you have 1,000 traders, each individual trader's risk profile can be much higher. There are also guardrails around compliance, risk management, etc. at the firm level that traders aren't necessarily involved in.
The things that made them great traders also made them much riskier choices to lead a larger company. To them, compliance is an obstacle in the way of profitable trades.
