Besides, this isn't 2011. European banks have learned their lesson and extensively restructured their banking system so a Greek exit will have essentially no effect on the rest of the Eurozone.
I believe that you are correct. I suspect that most of the outstanding loans to Greece have also been purchased by the ECB or have already had loss reserves allocated to them in some manner. And if necessary, there will be a flood of liquidity to prevent the markets from seizing up.