Very funny, sir. However you don't seem to understand what a subliminal rap song is... They arn't "compex codes and puzzles" they are simple battle type raps where the MC doesn't actually say the artists or person (who he/she is referring to) name.
And sir, subliminal disses have been around forever and have been done by every rapper from your backpack MC to the most mainstream rapper, not just "nerd rappers". Eminem, Drake, Ross, TI, Jeezy, Lil Wayne, Jay-Z, etc have all made sublminal disses on a good number of songs. Some of the greatest battles were built up by rappers taking shots at each other (Nas and Jay). And yes, sir, west coast rappers did and do sublminal disses too..