Much of it may be how you interpret 'flooded'. If this never happened before in Greece and it has happened 5 times now in the past year, that is a major increase in this type of activity, but a drop in the bucket compared to the actual number of patients and nurses in Greek hospitals. So, it could be something that you have never experienced because it remains an extremely rare experience. Perhaps, it is like what happens with aircraft incidents. I feel like the past 12 months have had a lot more adverse aircraft incidents than the recent past. That doesn't mean that air travel is anything other than incredibly safe. It is just that every incident gets a lot of press.

Remember even the New York Times doesn't sell papers by saying there is no news. They may not manufacture a story, but they are going to play up a story to sell their papers.

Back to the OP's question. The same applies. Greece has been in the news a lot lately, because what has happened there, both with the economy and with strikes and demonstrations is out of the norm for Greece and for Europe. However, by comparison to most of the rest of the world, it remains a very safe destination with a lot of appeal. Take advantage of the fact that some may be scared away from it to enjoy a wonderful destination with a few less tourists.