As soon as there is some relatively harder dungeon than others the players start to whine about how "ridiculous" it is. SE dumb down the dungeon and "give us harder dungeons" show up in forums.
As I see it the Syrcus tower and last 3 hm dungeons were designed with thought to have something not that hard but at same time something that would force the braindead people to finally learn at least some simple game mechanics. So, yeah, SE tries to make the game playable for all type of players but at same time they try to force players to get better too.
My favourite is Stone Vigil HM - still can see ilvl 90+ tanks ragequit when healers heal them just enough to not get all mobs on them, dumb dps with Novus that can't even use simpliest combos etc. Most fun is last boss - it require you to walk around it and kill it, haven't seen easier boss mechanics yet they are "ridiculous" for many people.