So far the creators I've worked with are all non-technical. They really just wanted to solve a problem in their niche. In the process of building it for them I kind of naturally biased towards using skills + Claude Agent SDK, to solve it for them since in my personal experience, it's by far the most capable Agent as of today.
From the creator's perspective, it's just a more powerful agentic CustomGPT that they can easily monetize. One of them has made more than $1600 so far, so I think she's happy.