I think Greece is overrated.
But as long as people are betting on it to have an influence, it might influence the price, even if no greek people buy bitcoin.
It's too late for the Greeks to start buying bitcoins but their situation encourages other nations to buy as a preventative measure! In that sense, Greece is perfectly relevant in this context since they started the snowball effect. They are not overrated. Is sperm overrated in comparison to a baby being born 9 months later? Greece has a very important role in this scenario and even though Greeks themselves don't buy the coins so much they are the catalyst to the global buying frenzy.