The term "mature" in this context usually refers to the age and experience level of the content creator, rather than the explicit nature of the material. Mature jizz workers are often characterized as being older, wiser, and more confident in their abilities, which sets them apart from younger or less experienced creators.
—the active cognitive work performed by experts to synthesize complex visual data into a single, accurate identification. Sage Journals Additional Scholarly Perspectives mature jizz work