I'm not actually sure what the overall point of the parent comment actually is, since he start's with David's timeline and then cites the reduction in medical schools related to Simon and Abraham Flexner, but doesn't actually delve into why Osteopathic medicine survived the medical education reform, or into John D. Rockefeller's support for Osteopathic medicine in general.

So, while I see the implication, the parent never actually makes that implication explicit.

Either way, I think it's important to separate the actions of the grandson and grandfather.