Actually nuking should stiol be a thing in bursting most of the time. What should not happen is more than 6-7 mobs dying in a same 4s window.
Its pretty much like sisters mythic, you stop crossing if the stack is too big.
Bursting : you stop killing things when stack is too big
But all in all I agree most DPS are just plain retarded. I pretty much only play tanks, and only in a full premade group of 5. Wouldn't even think of puging this week with how bad most healers are (panic when bursting is at 4) and DPS stupid (nice combe with not stoping DPS to reset bursting on top of threat management)