The Norse deities rarely have just one task to be busy with. Freya, for instance, is a Goddess of love, sex, death, war, fertility, gold, and seiðr magic. This strikes me as an awful lot of work, but there are more Gods taking care of those things, possibly with the exception of gold, because Freya is a bit…possessive when it comes to gold. There are many types of fire, and many Gods who are “assigned” to take care of it.
Let me start with berating Wagner, who put it into people’s mind: Loki is not the “god of fire”. That’s Logi. (Which means “fire” in Old Norse, in case you forgot the name, but had a dictionary at hand.) In one of the Sagas, Loki is put to competition with Logi to see which one can eat faster. They meet in the middle, but while Loki ate all the meat, Logi also took care of the bones, plates, and the table itself. Later the deities involved find out that Loki was competing with the fire itself. Logi is the God associated with wildfire, and if you’ve seen any news from California in the recent months I don’t need to explain why Loki had to lose this contest. Loki plays with fire, Logi is fire.
There are good sides to forest fires, although I wouldn’t say Californians (and others) think the same way. A fire cleanses the nature, preparing it for new growth. You have to destroy in order to build. It’s when the destruction gets completely out of hand that the real trouble starts…but I will talk about Surtr in a moment.