Comics art is time-consuming in all stages, so dividing the work is common. By dividing the work, the job gets done faster (so a comic might have someone who does the writing, the rough pencils, the final inks, etc.) It can all be done by one person, but that increases the workload on that person, and increases the time it takes to finish a piece.
Labelle is a lazy fuck and an "artist" only in the loosest sense of the word. His big selling point is that he's a transgender artist, with extra emphasis on "transgender." He gets someone else to do the work so he can hype himself up as a transgender artist.
And no, he's not an artist. He has a terrible sense of anatomy or proportion, and struggles to make even his simplistic backgrounds match from panel to panel. He claims his art is better since he bought a $3,000 tablet, but he doesn't know that the tools don't make the artist. The art doesn't matter; only the transgender does.