Well, it seems like they might have done something about it. I got a notification that took me right to the low rated comment. It was still collapsed, but it was the only comment, with no replies, so I don't know how deep it goes.
IT WOULD BE NICE IF, WHEN WE GET A NOTIFICATION FOR A REPLY IN A LOW-RATED COMMENT THREAD; CLICKING THE NOTIFICATION LINK WOULD AUTOMATICALLY OPEN THE COLLAPSED THREAD