> It’s kind of interesting to hear from someone who had a job offer from SBF until they asked questions

Well the OP counters his own speculation (but even if he didn't who knows what really happened):

"(indeed, I was missing the domain knowledge and operations experience required for my role, as I had only ever been a trader)."

What's interesting about this is the tendency for people to assume the reason 'asked questions' as completely true.