From what you say it doesn't sound like the opposition are being petty or political by making the fires an issue.
The press are REALLY ripping into the government and its lack of action. The politicians were caught with their pants down and totally unprepared.
People died and if that was in any way made worse by the government's incompetance then it's the opposition's duty to speak out against the government.
Sixty-three people losing their life is the saddest part of all. The charred remains of one mother were found and she had in her arms her three little children trying to protect them. This summarizes the tragedy that occurred best.
How bad is the damage to ancient Olympia?
Half the grounds of the stadium itself were burnt .... the entrance to the archaeological grounds were also burnt .... as was a well known hill behind the stadium grounds (Kronios Hill) .... as well as part of the International Olympic Committee grounds.
The best part is the Minister of Culture arriving to the grounds after the fire and trying to downplay the damage with "just a few trees were burnt" ... and when footage of the actual damage started making rounds around the world, he quickly changed his tune and stated that he had an opportunity to walk around and inspect the damage and that his original assessment was not accurate.
Politicians are a breed of their own ... I am sure are local "crop" is representative of other national "crops".
One of the two major fronts was northeast of Athens on the island of Euvoia and which is directly across the channel from me. I had a direct sight to the burning fires and my skies did fill with smoke and ash. The area smelled for at least two days and there is still ash flying around. My equipment will certainly be staying indoors for at least a few more days.
  