Just because you wipe once during a dungeon boss, doesn't mean the difficulty needs to be adjusted. There's no point in complaining about having to redo a 3-minute fight. Figure out why you died and try doing it again. None of the MSQ dungeons and trials have party-wiping mechanics.

Also for trials, you're in there with 7 other people. Even if you're absolute TRASH and constantly die repeatedly to every single mechanic, if the other 7 people know what they're doing, you'll still clear.

Things like MSQ and normal trials aren't meant to be very difficult. Some people literally don't care about the challenge, and just want to breeze through the story. It doesn't matter if these players are stuck behind a gap, because that's where they want to stay.

Normal raids is where you get prepared to get serious. Extreme is a step up from that. And Savage is for when you're ready to stop bitching about the difficulty and actually learn how to play.