This is going to become quite a regular occurrence. The law of probabilities would dictate that the increased number of passengers increases the likelihood of passenger related problems. Wait until the high density version enters service.
Medilink will 90% of the time recommend a diversion because that is the easiest thing for them to do. They have no idea of the difficulties or problems that the crew face during unforeseen diversions nor do they care, their job is done. This may become a big problem on more remote routes.