Greeks are not rushing to Bitcoin.

Even a 10x increase in Google searches in Greece amounts to just about nothing.

The people that were smart and withdrew their Euros before recently will only be able to buy Bitcoin from LocalBitcoins. (The capital controls/bank closings ensure this.) Yeah, Coinbase exists in Greece...but good luck using it with the capital controls.

Unless they need to get money out of the country, there is little value in buying Bitcoin for the average Greek. They are still holding Euros, which unlike the situation in Argentina, still have value outside of the country.

The psychology of all of this is what's driving the recent slight price increase. At the end of the day, psychology is what moves markets.