Yes and no.Why risk losing his Patreon account (even if the risk is low) if someone else is just going to do it for him, in a couple hours? He's just wasting his time otherwise.
As it seems he cant even write the storyline like he wants to in terms of incest outside of MC's family let alone draw the scenes (Erik & Mrs. Johnson, Eve & her sister) so he even kinda limits himself. For my taste it just lowers the overall quality of the game.
But like I said, he earns 33k/month, so businesswise (and thats what it is) he doesn't have to change anything.