Comment by jandrese
iCal feeds don't bring you into the site. The whole point of Facebook is to be a walled garden that discourages you from going elsewhere. You're lucky they are not like X and deprioritize external links. Or maybe they do, I have not tested it myself.
The popular wisdom is that FB has deprioritized external links -- some accounts on FB are now posting an image with a blurb and then saying "link in comments." I don't know if they're doing it on rumor, official communication, or having tested clickthru rates themselves, but several of these have large enough media operations that all of those sources are plausible.