I edit the pages on this site with Emacs also, although volunteer helpers install the political notes and urgent notes. I have no experience with other ways of maintaining web sites. In principle I would be glad to know about other ways, but learning about them is low priority for me and I have other things to do.
I read Stallman’s notes about his processes once in a while as an insanity check. It reminds me how much we’ve succumbed to the temptations of always improving the way we do things. It also reminds me how difficult it is to resist those improvements. Gotta give RMS credit for sticktoitiveness.