@Suiseiseki because it's not. far from that. OS is Linux. it deals with all the hardware and does all unseen but important system tasks, there're also user layer software that is often written by GNU and other developers. and useless-d is just like a cancer tumor that penetrated into all user layer sybsystems with its metastases and devours and undermines the software from inside. it could be really easy to get rid of it at early stages and some distributives did this at once. but after letting it grow some ones came to a point that removing of the tumor will be very difficult and painful operation, with heavy patching of nearly everything,