NO, JYP IS NOT STUPID TO CREATE CDS. Here is the reason, I will give u an example let's say your phone is dead, smashed, broken, thrown away and you want to listen to music. I ask u where in the earth can u listen to music??? CDS THEY ARE LIKE UR LIFE SAVER and then you would also say through the TV or tablets or something else to listen on spotify, Yes u can but what if disasters happen or even someone crazy smashed ur devices. U can have a CD player too to listen to music. Even Twice has a CD player ,they post it through their stories in instagram saying that they are listening too. So Please think before you say. 
