First time I hear someone who reacts to this song and actually focuses on the lyrics, the vocals make the lyrics more heavy and more impactful. In my opinion the message of the song would have been ruined if the vocals weren't done like they were here. Personally I understood everything perfectly without needing to read the lyrics but I guess by listening to death metal from the age of 12 since '06 has helped me a lot when it comes to understanding the lyrics that are "sung" with harsh vocals.