You sure it's actually macros? There's a large overlap of Nditions players and EU1 players, so it's only inevitable that this style of feinting would make its way to cRPG. The 'standard' feint that pretty much everybody has learned looks like the player's head is bobbing, and like their sword is twirling (all while usually staring at the ground). This isn't difficult to pull of manually.
This. On top of that, feints in cRPG are quite slow unless you play a 15/27 katana build or something. Most players can manually reach the maximum feinting "speed" (minimum time between two releases). It just isn't very beneficial because the animations don't keep up unless your weapon is long or fast.
Kafein are you saying you don't think it removes an element of difficulty if you can just press "F" (for instance) to left block instead of making a mouse movement to do that?
Yes because if you want to block everything via hitting your keyboard, it means your already overloaded left hand will need to be able to press and hold for the correct amount of time any of the four keys you will choose for blocking at virtually any time. If you don't want to lose any functionality from the mouse-controlled block, you don't want this change to hinder your ability to move while blocking. That means your left hand has to be controlling four movement keys, out of which you will always use one or two during action, and at the same time without releasing the movement keys being able to hold block keys for the correct amount of time. That is simply not possible. You see, it wouldn't be a problem if you could know in advance what keys you should use when, like if you played music from a sheet, but you inherently don't know when and for how long you will have to block.
Also my point is, a game shouldn't be hard because the controls are bad. Failing should result from an error in your reasoning and reaction, not in the way you communicate it. For this reason, there's no point limiting people in the way they modify the controls to suit them.