Maybe the fanfic had some false or offensive information about Naruto or his world. He couldn't stand it so he burned it.
It could be that the live fanfic was causing some sort of chaos or disruption in the Naruto fan community. Naruto, as a symbol of the series, was used to represent the act of getting rid of this troublesome fanfic. For example, if the fanfic was spreading misinformation about character relationships or important events in the Naruto lore, it might need to be 'burned' to stop the wrong ideas from spreading.
Maybe they have a very extreme view. They might think light novels are full of unrealistic content that misleads readers, especially young ones. So they want to get rid of them all by burning.
It could be for a more personal reason. Maybe he's going through some internal struggle or self - doubt, and wearing a mask is a way for him to create a new persona, a stronger and more confident version of himself. It's like a shield that allows him to face challenges he might not be able to as the regular Naruto.
Maybe the fanfic doesn't respect the kunoichi characters enough.
It could be a story where something in an alley near a house burns and Naruto and Tsunade are involved. Maybe they are trying to put out the fire, or perhaps the fire is related to some sort of mystery or danger that they have to face. Without reading the actual fanfic, it's hard to say for sure.
Well, 'burn baby burn' gives the impression of something exciting or chaotic. In the context of a TF2 fanfic, it could be about a situation where the characters are in a really tough fight. Maybe there's a lot of destruction and high - energy action. For example, it could be about a battle between the two teams where the environment is on fire and the characters are fighting tooth and nail to win. It could also be about a character's personal journey within the game's world that has this 'burning' or intense aspect to it, like a character facing a really difficult challenge that they have to overcome with a lot of passion and determination.
I'm not sure if it's popular. There are so many TF2 fanfics out there, and without more information or some kind of popularity metric like views or reviews on a particular fanfic site, it's hard to say.
One reason could be to explore alternative scenarios. They might think 'what if Naruto had this super - broken power?' and write a fanfic around it. Also, it could be a way to stand out. In a sea of Naruto fanfics, having a really out - there concept like a 'broken' Naruto might attract more readers.
It could be that they have a very different interpretation of Naruto's character. However, this is a very extreme and negative way of expressing that view. They might not understand or appreciate the values and growth that Naruto represents in the original story, and instead choose to write something so unkind.
One reason could be to explore the concept of 'what if'. What if the villagers' fear and hatred for Naruto overcame any chance of redemption or acceptance? It's a way to create a dark and alternate storyline.
Someone might say it if they think Naruto has evolved into something more than just a ninja - based story. For example, it has complex character relationships that are not just about ninja battles.