What is this farm nerf?

nope tested stratholme raw gold farm… as soon as you start bursting them you are in perma stun seems something like 20+ mobs untill they start the stunning thingy…

started farming dmn with 2 accs pala + mage for steamwheedle rep and got something like 300-1.5k gold per hour depending on libram drops but now all of my pulls are just ripping me off tho this change is just stupid in my eyes the xp nerf was enough tbh. why touching peoples farming methods that arent buying gold at all?!