I'm in favor of this because I find browsing DW logged out super annoying, because many set the age for their journal so high that all harmless content is flagged, but it should be made very transparent when implemented in some announcement because some users might have used this as a by-entry search engine crawl reduction, even if it was not intended this way, and might be unpleasantly surprised if the side effect doesn't work anymore, and some of their content is suddenly crawled.