Hey there I live in Greece and I can give you some insight on this.
Lemnos is considered critical for security, like all islands, mainland and sea, near the Turkish borders.
As such government and especially the military are very touchy about military installation photography.
Now the fact that you can see with great detail those installations on Google maps, makes this situation a joke.
Moreover, if Turkey wanted to take photos - which I'm sure they already have - they'd send real spies who wouldn't get caught.
So instead of using the game as a tourist attraction, the butthurt Greek government chooses to create negative publicity in the whole world.
This is the country I live in :)