mea culpa, you was right about this one...
anyway, you miss the point totally, we do point that memorize and repeat long pattern while doing it with 7 other person and pray that everybody will do it. can be quite hard, if the personal skill of the member in this category is lacking. but, at the same time, it's quite accessible if you have the right person with you.
we are not robot, not everyone is the same... and not everyone want simply repeat the same lesson over and over and over for beat content. we want to have challenge, we don't say that the actual endgame is lacking a sort of challenge, however, it lack deepth. making it really fast boring and tasteless. if your group beat the content 1-2 times, it's over... it will beat it each time. because nothing can happend that will make the fight different.
another point, and this one anger me generally (not you there) the fact that people think that other can't evolve and get better at something... it's quite arrogant to think that the other can't learn, when it's one of the particularity of the mankind. but, for make people want to become better, the challenge need to be fun, and that not the case, it's frustration with all the one shoot mechanic... it's possible to make hard content, without use any one shoot mechanic or frenzy one! sadly in this recent years, most of the dev from mmorpg industry think it's needed to create a content that revolve around this artificial way to increase the difficulty of a content.
instead to offer us various challenge testing different capacity of the community, training them for be able to offer more variation, they fall in the simplicity of this easy mechanic.
and that what people like me say... we don't say that we can't face challenge like the one present, but that we don't feel the thrill to beat it... because it's too much boring. when you come from game that ask you to take decision instantly because the boss simply don't have any pattern... and arrive here. you can't say that this sort of challenge is fun or interesting.
Yoshida talk of make the game better for keep more player... sadly he fail drastically when it's about endgame content. reward are not always what drive people to face a fight... challenge and fun to do it's far more important than the reward.
this is sooo true. mmorpg, didn't really evolve in the last decade, because WoW did make the genre stagnate, what make a genre evolve and grow, it's the competition for many year wow didn't had true rival... and they haven't try to really evolve... in fact they have even make the genre take a few bad turn and need to be changed.