The attached patch moves this paragraph there. I distilled the paragraph down to its essence, but am open to being a bit more wordy, and consider more how this fits into the existing content of that page. I'm only really married to two things - mentioning the -X argument to pg_basebackup here is a bad idea and the content does not fit in the existing Tip area of continuous archiving section.
Created a new -hackers thread for my patch and added it to the commitfest for July.