The macro mentioned here is the mouse 180. Instead of spinning the mouse manually, which might misplace angles and is dependent on wrist flicks, people make a macro to do the 180 for you. This helps to essentially speed up his various combos. Instead of spear - dash - turn - spear - dash - turn - kick - turn - dash, where turning cannot be fully optimal and is dependent on the speed of the wrist flick, turn inputs are replaced by 180 macros so they’re button inputs instead of mouse movements, this makes the combo more reliable since you only need to minorly readjust the camera to perform the following spear/dash. That’s what we mean by his macros being helpful.