When you realize it's silly, take another minute to think about why it's silly.
The author's point is about developing a skill, not about creating a specific piece of work.
Even if it were about creating a specific item, there may be 100 pages that the author wrote but didn't publish. The point wasn't to share all of one's work, but to do a substantial amount of work and also to share work that can garner good feedback.
Being prolific isn't the same thing as doing a lot of repetitions. "Prolific" refers to a quantity of creative works. The weightlifting and musician examples aren't apt, any more than saying "don't be a prolific author because there's a high risk you'll slouch in your computer chair when you're doing all that writing." Ergonomics are orthogonal to exercising one's creativity.
The author's point is about developing a skill, not about creating a specific piece of work.
Even if it were about creating a specific item, there may be 100 pages that the author wrote but didn't publish. The point wasn't to share all of one's work, but to do a substantial amount of work and also to share work that can garner good feedback.
Being prolific isn't the same thing as doing a lot of repetitions. "Prolific" refers to a quantity of creative works. The weightlifting and musician examples aren't apt, any more than saying "don't be a prolific author because there's a high risk you'll slouch in your computer chair when you're doing all that writing." Ergonomics are orthogonal to exercising one's creativity.