Although both terms, burnt out and cooked are synonyms that are used to describe something exhausting, cooked is a more informal nonchalant expression. Burnt out is grave and emotional but cooked makes the song sound funny or dramatic rather than depressing. The fact that using cooked allows them to convey feelings of tiredness without appearing to be negative is essentially important to Gen Z since they are able to turn a negative situation into a joke which can be easily recognized by other users during online communication. Know more about Cooked Meaning