I fully agree with Tuga.
If everybody would play like Greece, the stadiums would be empty.
It's not only their ultra defensive style, but using fouls as a resource all the time to keep their opponents game form being fluent.
The also throw themselves to the ground at every chance trying to fool the referee to call fouls in their favor. I would not be surprised if they even practice that on their training
Anyway they won because they outplayed everyone including the referees. So congrats.