You are not a fail.

[Jayne422]

...but some of those example is just seems like some players being bad and uncompromising to other players especially the "mechanics" part.

I mentioned, there's a difference between a speedrun that is beyond what your party can handle vs just trying to make the run a bit easier/quicker - especially in case of burning bosses down is what the majority people do and actually handling the mechanics half-assed that actually makes the run harder.

So... I will totally run a dungeon in this manner, where we skip mechanics, because the majority want to run it that way... but I, as a player who wants to enjoy the game and experience it as the developers intended it to be experienced and experience it fully, and as someone who wants to learn the mechanics of the game, have a huge problem with the move that the community in general has made toward skipping mechanics and taking the easy road.

It teaches bad habits and in the long run, it means that people aren't learning how to properly play their class/job and utilize all of the mechanics and functions of their job. They don't learn how to tackle the fights in the way the developers designed them, ways which were designed to help players learn their roles and functions, not just in regards to how they play their own class, but also how to work effectively with other members and classes. Players don't learn how to deal with certain game mechanics, because those mechanics are skipped. What happens when similar mechanics come up in new content and a good majority of the players who are just trying that content out don't know how to handle it because they never experienced any of the mechanics in the previous content?

BCoB Turn 2 for instance. I have no clue how the mechanics of that boss fight work. I only know how to sit around for seven minutes doing nothing while the party waits for the enrage mode. I then only know how to spam AOE heals to ensure the party doesn't die while they DPS down the boss. If there is content added later that works similarly to the mechanics of that fight and there's no "Burn the Boss" method of doing that content, I have no previous experience with those mechanics because it is considered unacceptable to run the previous content without skipping them.

If you're just burning the boss down and skipping mechanics, and you're expecting everyone you run with to do the same every single time, you're not only hurting the people you're running with, you're hurting yourself. Because you're not learning and you're not allowing your fellow players to learn.