He has accepted collaboration on something he cannot do. DPC can't draw, the reason he uses DAZ models. He can't complain because he cannot do better, if he could... he would fingerbang your cat, rape your dog and kill your parents in your sleep. If that would worssened the quality we don't know but it would be more stressful and time consuming for everyone involved
there is too much myth about DPC
the central point of DPC's resistance to having collaborators, in his own words, was the dependence on timing and punctuality in delivering his work. he had to face this problem with the 2D renders, even if he had already had all the renders sent to him he had to trust him.
once he accepted this risk, what this collaborator does changes little. there are certainly parts of the work on BADIK that DPC would not delegate to anyone, but it seems difficult that he loves every single phase of creation to death.
we can't simultaneously worry about the fact that he works 12/14 hours a day (if true) and at the same time consider impossible the only solution with which he could have "normal" rhythms
i think that as a fan of his work we should hope so, because it's almost inevitable that he will burn out at some point (besides the selfish reason of speeding up the release of chapters, but unfortunately the patreon mechanism doesn't help with that).