I've read your posts, but can't tell what you want. The snippet of code I posted was to extract the date for you so you can do something with it. Presumably, you want to display it womewhereYou didn't say what you want to do with it. It certainly doesn't require "manual rewriting all of the Calibre functions for the entire HTML fetching & rendering operations."
As for bolding the title, you can use extra_css.
As for "views and number of comments/posts along with pipe symbol," I think you're asking how to remove that "junk", and the answer is you use remove_tags.