While mechanics ARE king, that’s not the full story. Lower dps requires higher performance to beat enrage and the simple fact is, if you can’t do your rotation then you’re not good enough to do mechanics. Besides if someone’s dps is bad enough it can make it harder for everyone else. When you NEED a dps LB3 to beat enrage then you can’t tank LB Cachexia 2 or healer LB3 a bad mess up.
Mechanics you can ignore or mess up become wipes with bad dps.