The What was the daily routine of Charles Bukowski like during his years at the Post Office? is closed for being about writers, not writing. However, according to What topics can I ask about here?, there is no explicitly criteria saying that questions about writers are off-topic or not.
So (why) would this kind of question be off-topic? I see that sometimes it's helpful to analyze a writing style. And in any case, we should add this to the help page.