In any case, these Otaku have nothing better to do with their lives other than to fill their minds with this useless drivel which can't possibly be applied to anything of use in real life .
Anime fantasy becomes their whole world.
All of this tech knowledge makes sense, but will not possibly be seen in the real world. They try to make sense of the world around them by trying to gain full control over the creation of their own little worlds. Thus, they invite others like thme to congregate into their own little worlds. Anime is their world. Take anime away and their lives are filled with a strong emptiness that isn't easy to ignore.