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.
No. Burning novel books is not acceptable. Books are a precious source of knowledge, stories, and culture. They contain the thoughts and creativity of authors, and many people can gain enjoyment, learning, and inspiration from them. Destroying them through burning is a form of vandalism and a loss to society.
Well, Burn 2019 is not based on a true story. It's more of a creative concoction designed to entertain and engage the audience with an invented plot and characters.
A slow burn in fiction is when the development of a relationship or plot progresses gradually and deliberately over a long period of time, building tension and anticipation.