Why I have no interest in Coils more specifically, T9.

[Jamein]

My assumptions are wrong? So the fight isnt the same thing over and over? The fight isnt just the same exact run no matter how many times you do it?
Then what is it?

I'm not sure how many more times this needs to be said, the fight is indeed scripted, but that doesn't mean you're going to down it just by memorising it.

What do you do if you're going to get a double fire or double ice, that's not part of your memory as it doesn't always happen? Can you identify and mark the divebomb patterns as its 1 of 3? What if a meteor is placed incorrectly? Can you adjust for that? Awkward phase changes if you pushed it too fast or too slow?

Just because you KNOW what the next attack is going to be, that doesn't automatically mean everyone can do it. So many people know the rotation but cannot handle both the boss mechanics and perform well on their own class. That comes down to player skill, not memory.

PF is a great example of this in turn 10, the mechanics are pretty easy, and there aren't many of them, but without echo DPS classes struggle to get the DPS needed to down the boss before enrage, I'm sure they can perform their rotation well on a training dummy, but can they do it while dealing with mechanics?

The fight is a set rotation, but there are things that can and will go wrong and you have to adjust, people still get hit by divebombs or misplace meteors, not stacked in time for thermionic, hit the party with thunder because they didn't see they had the debuff and you might call that bad memory, I call that bad reaction time. You can know a thunder is coming up, but if you don't pay attention and miss that it's on you or move in time, then you've just hit the entire party with paralyze. You don't need to memorise the rotation, you just need to know the mechanics, and if you don't react in time to certain things you'll pay for it.