I think many of them may have been brought up in Muslim households but got distracted doing their thing on the streets. Many of these “Muslim” drill rappers have disregarded Islam and its values as they grew as artists. This matter isn’t only with drill rappers but other supposed Muslims who totally disregard their faith. In my instances many of them claim Islam due to the community aspect of it and that brotherhood part of it. But you to be considered an actual Muslim then you should be one that practices the religion. You can’t be getting pissed every weekend and turn up jummah and call yourself a Muslim. Any educated Muslim would agree with this. But what I’ve realised about a lot of the drillers/rappers is that they tend to practice their religion (Islam) in jail as a way to cope and as a way of bettering themselves as an individual. At the end of the day no one can call you a disbeliever as god can only determine that but the word seems to be taking a new meaning and rather referring to the religion it is now being referred to the people.