I'm agreeing with you: there is no reason for him to act in any other way. Hence, not much else you can expect. This is what hedge fund managers are paid to do. What rubs people the wrong way is his brazen temperament. Shorting stocks isn't wrong. However, market manipulation toes the fine line, evidenced when he thwarted approval bids for pharma drugs while actively taking a short sell position on them. An ethics issue, not a legal one
I don't know if you're playing devil's advocate, but the patient DOES come into play, and it's in no way 'purely' financial. If you believed this you wouldn't be in healthcare, no? Shareholders are only one of the many stakeholders
Hopefully something will actually be done about it this time around