I suppose that unlike reviewers a lot of players might also be a bit burnt out/out of patience after replaying the entire game, so there's that to take into account review-wise. So maybe things will calm down a little after a while (and more consistent strategies for the new bosses).
Or maybe not. While replaying ER despite being one of my favorite games I can't shake out the feeling, after seeing trailers for Wukong, Phantom Blade, etc. that if someone, someday, gets actual good gameplay right while reasonably mimicking From's level design - they'll just eat their lunch and walk away with it. Playing a game like 2009 Demon's Souls won't cut the mustard forever.