The difficulty curve in the game has... problems...

[Colt47]

Nope, you are entirely wrong. The reason why these plugins exist isn't cause the difficulty is too hard. That is like saying weight loss is hard that's why people get their body fat removed artificially. People are lazy and don't want to learn when they can have something for less work and free. That is common all over the world and has nothing to do with difficulty curves but rather people cheating their way through life cause growing their e-boners is more important than growing their skills.

It just needs dedication and the will to actually overcome something.

This is absolutely false. Will and dedication is important but what is needed to get through content is will, dedication, and proper Leadership / teamwork.

Leadership and guidance is something that is missing from savage that is provided in-game during normal content through visual queues in the fights, which in combination with zero enrage timers enables that content to be playable by just about all people who play this game. But the issue is that the second someone steps into doing savage or extreme trials, the guidance is taken away and enrage timers are applied. Mods that were developed in World of Warcraft were designed to fill the gap of missing guidance and enabled groups with poor leadership and learning skills to tackle content they otherwise would be unable to handle, which then lead to an arms race between the devs and the community at large where they started making content to meet some arbitrary difficulty wall for player retention.