dvcochran
Grandmaster
This video makes my point. He has time to set and prepared for every kick into a padded TARGET. He does not have to worry about 50 other 'what ifs' that may come at him if he had an adversary. The target is not moving and poses him no danger. This take much if not all of the dynamic out of the equation.Show me someone who does if it's part an parcel of that evolution you were referring
0:44
World champion Suska... Straight line..
Simply put, you are thinking too narrowly and in a very limited idea of what is 'correct'. I think you are looking at the kick from a forms/kata/poomsae perspective. Not explicitly wrong but not at all complete martial art training if that is the only way you think the kick is done or used.
Too much video training I think. You need to get into a dojang and kick but more importantly get kicked at.