Technically yeah, it's not all about split second reaction timing or mechanical execution. It's about knowledge, knowing your class, and more than anything else it's about math. Damage over time is normalized and set into a solid structure a given player operates in. I take issue with the statement that it requires no player skill at all however. So let's say for example you find a way to optimize a fight such that instead of 600 dps you are doing 615. If everyone in your static can optimize similarly you gain somewhere in the realm of 80 dps. That's not small proportionally. The player skill comes in with the ability to coordinate with your team and warp that perfect rotation into a working system that synchronizes with the rest of your raid.