It's not that complicated NOW. Now that you've had someone else die to said mechanic a handful of times and figure it out for you. Now that you've got an infographic to explain it in grand detail, it ain't so bad is it?

This is the inherent problem with fights like this. A random group placed together, of skilled individuals, would not be able to "figure this out" in a meaningful time frame. The divebomb mechanic in t9 is honestly a terrible mechanic. It requires at least one person who already knows the mechanic before the fight even begins. You need this person to mark the floor for you, or you will fail.

This isn't the sort of thing you fail to and then rally and come back for the win from. This mechanic is straight memorization from previous fails. It is not challenging in the sense that you have to use the skills you've learned about your class. It is merely a "You must stand here or you will die". mechanic that gives no obvious clues as to why the sh*t is hitting the fan.

And here is the grey area: Some hardcore groups may find this type of mechanic challenging and actually enjoy it. Place this mechanic in a group of randoms who just want to queue up and get the job done though? Now you've got huge issues.