No one is advocating that content like dungeons be Savage-level difficulty. They’re just saying that this game has a very poor difficulty curve when it comes to its content. When some of the hardest “casual” content continues to be the level 47 dungeon Aurum Vale or the level 57 The Vault, there’s an issue there. There’s an issue when leveling dungeons offer more of a challenge than the supposed “Expert” endgame dungeons. Dungeons are so easy, the minute something minutely challenging appears (like a 24-man, which is also catered towards the more casual, non-raider playerbase), people start to complain about how it’s too hard. Look at Weeping City, Dun Scaith, and Rabanastre. Each one has had cry after cry for nerfs (Weeping for Forgall/Ozma, Dun Scaith for Scathach, Rabanastre for Hashmal), and the content isn’t even that hard.
Look at ShinEx—a definite step up from Lakshmi and Susano. And how many people are whining that it’s “too hard” and needs to be nerfed? I’ve seen people say Shinryu is the same level of difficulty as Thordan Ex at launch; Shin wishes he was that hard. Even at i240/i260, Thordan still had mechanics you just couldn’t ignore; sure you could skip the entire last phase (well, sometimes), but he wasn’t a pushover. Susano and Lakshmi were rolling over at release; even more so now. Even Shin will start to roll over once 4.2 comes out and players start getting the new gear.
This game needs a better difficulty curve. With a better difficulty curve, players that would like to try their hand at more challenging content (Extremes and Savage) would not be so overwhelmed when they got there because this game does nothing to prepare you for the likes of raid floors like A8S, A11S, A12S, V3S, or V4S. It can barely prepare players for content like Thordan Ex, Sephirot Ex, or Shinryu Ex. Something has to be done about it.