Quote Originally Posted by Xzin
If it uses WoW's own API (and it does) then it is completely fine.
This isn't 100% accurate but about 99%. You can find ways to do things that will get you banned with the native UI. This follow mod however is VERY much a common thing and if they wanted to force following to a hardware event I imagine they would have in one of the many movement nerfs they have given their UI.