u have a good point and thats parts of it..but most of it is being real artistic while dissin someone ta release ur anger or hatred towards them...like almost picking on them or havin a one sided arguement with them but in lyrics that rhyme...but it mainly based on how artistic u are and there's no such thing as anybody not being able ta come up wit a good diss...some people might be able ta come up wit a diss in a snap of a finger and some might take a few minutes but either way everybody gets better.