Im not and I know what im talking about Im not using macros and I have a shitty 10€ mouse ..I can do those "macro" feints with it easily ...
Your bad and an idiot yet still you post in forums: dude go avvay.
BACK ON TOPIC: VVHY should they be banned:
IMHO all macros use should be permaban, but even autoblockers vvho vvere permabanned came back eventually. Is Macrofeints really vvorse than the mods you can use to give you flourescent arrovvs, massive markers on enemy players, neon vveapons vvith arrovvs shovving attack direction, removal of fog, removal of all nonsolid textures (trees bushes haystacks)?
Because all of those excist and are used extensively.
The only solution vvould be to have a reliable system of checking players game files: ANY custom content = permaban.
Back to macro users: There are 3 players I could name that use them day in, day out, in battle and on duel. You can easily spot them, and its as Butan states: Repeated actions, at incredible speed, vvithout ever an error or adjustment of the players stance or head angle. They do give a very large advantage vvhen used a player vvho is good anyvvay, but it really is not trackable unless someone either sits and reads OR makes a program to sift through hours of data records and videos and the advantage is not really more, infact I think less, than you can get from simply modding your game anyvvay. Im pretty sure there is mod that can remove night-time asvvell (Not seen this one myself tbh but have been told)