Realism of flight leads a lot to be desired when it comes to this hobby. People by nature are not structured individuals. They usually do what they want and this applies to flying R/C models. On Saturday mornings a group of us gather on a dry lake bed in Southern California. The wind normally blows from west to east and that dictates a clockwise traffic pattern. We as a group adhere to these flight parameters however no two individuals takeoff in a similar manner. Most of these individuals takeoff directly adjacent to the pit area. I believe I am the only one who taxis to end of our makeshift runway and takeoffs. The reason I do this is to practise. I do for myself.
Takeoff fixation is not something new and as long has there are beginners in our ranks this phenomon will occur. As others have pointed out, only the understanding of control reversal will correct this unintentional condition.
I have never asked the fellow modelers I fly with why they don't use the whole runway to takeoff and they don't ask me why I do. I believe that this individual who claims he suffered from a fixation problem will realize he is problem and not is airplane.