I still promise you it wouldn't help much because its still more efforts than queueing -> leaving my character auto-attacking the boss while i take care of the laundry for example, and coming back with items more than powerful enough to allow me to do about anything on my alt, Secrets of the empires for that alt's legendary cloak and valor points.
Is it a bad thing to do? Yes. Why do people like me do it? Because the content is literally not worth playing for people like and doing it doesn't have any real impact on the group's success simply because of how untertuned it is. I've seen 5 people kill Durumu from the first Death Beam phase to the end.