Final answer:
Finn can be described as a prolific writer, meaning they are highly productive and produce a large amount of written work.
Step-by-step explanation:
The term that best describes Finn as a writer is prolific. Being prolific means that Finn is highly productive and produces a large amount of written work. It suggests that Finn is skilled at generating ideas and consistently producing written material.
In the context of the information provided, the steps most writers go through in the writing process, which involve pushing forward, stepping back, and repeating steps multiple times, indicate that writing is not an easy or linear process. This further highlights the value of being prolific as a writer.
Source: Information provided