Quote Originally Posted by MPK View Post
Where's your source on that? Fights should be designed to be cleared at min ilvl not 100 ilevels above.
I managed to find the original quote from 2015 (source):

Quote Originally Posted by Yoshi P
For development, such as with Bahamut's Coils, the development team assumes what the item level should be for general equipment on players when they clear a raid. They sum up the basic DPS for four DPS and tanks at that assumed item level and cut that by about 10-15% for the minimum clear DPS. Healer DPS is not taken into account when this is set.

Certainly for people who are at world's first level, their goal is to clear it at as low an item level as possible, lower than the one assumed during development. So if you look at the fight and figure out that if it's not numerically possible to clear with four DPS and tanks, you'll need to make up the gap with DPS from healers.