It was very odd the way Trump called it out. Rfk is the oddest guy in the administration so it's not surprising. Trump however is pretty transactional and usually has a good reason for the things that he does, even if you don't like them (and not just self serving attention grabbing reasons, but power plays and maximum pressure tactics) . He definitely had an angle here. Was it to demonstrate his power to Big Pharma? Either way this was a bit of an own goal for him.