Fire is fodder, any fire technique is D level
In the Narutoverse, yes, it is severely underplayed and inconsistent.
Just look at Sasuke's Great Dragon Fire; it had enough explosive force to smash through a building and enough heat to help make cumulus clouds, yet did almost no damage to Itachi when it his his arm. Even if Itachi's arm didn't get blasted off, you'd think that much heat would at least reduce his arm to bone. But no.
In the Narutoverse, yes, it is severely underplayed and inconsistent.
Just look at Sasuke's Great Dragon Fire; it had enough explosive force to smash through a building and enough heat to help make cumulus clouds, yet did almost no damage to Itachi when it his his arm. Even if Itachi's arm didn't get blasted off, you'd think that much heat would at least reduce his arm to bone. But no.
ice release gets less respect, anyone who gets frozen as far as I'm concerned is technically 1 shotted. you can survive longer in the most blazing hot desert than you can in the frigid arctic.
Also fire doesn't affect Naruto. Remember VoTE, when Sasuke fired Naruto and Naruot jumped through it and hit S?
Darui's Lightning shocked all the Black Zetsu in the area.
Wasn't Naruto being protected by the Kyuubi shroud in that moment?