Before we start blaming the pilots, if you read the whole huffington post article, it's a known issue in the 757 window heating system (among other Boeing aircraft, but the airlines are fighting a mandatory AD to replace it, right now it's just a recommendation.) The comments in the article about the cockpit windows being cracked as well leads to the fact that it was most likely the window heating system. As long as they cut the power to the heater, put the actual fire out, then there is no continuing issue.
Also, if you listen he did eventually request the equipment but that he would taxi off the runway. I actually think the pilot did a good job with his requests which kept the runway open after he landed instead of tying it it for who knows how long before the FD cleared that plane and they towed it to the gate.