I think you're reading into it too much, and you're taking it too far away from the context between Dad and Daughter. This is, and will be, their own personal experiences. For some starting a hedge fund can be seen as high-risk, when for someone that has run one for years (Dad's case) or for someone that's been around one for years (Daughter's case) it can be seen as low-risk.
If Dad was an MD he would've said don't become a surgeon, do research and try to change current procedures. At least that's my take on the blog.