Pearlharbour
The intention, as I see it, is having a legal defence in case someone of those made redundant decides to object in court the decision to fire him and potentially hire someone else in his place. That way, the company is totally safe, should anyone decide to do it. You weren't fired arbitrarily; you were assessed and found inadequate for the position. As insulting as it is, especially for those who have actually been trained by very same company from day one of their careers, it's a rock-solid argument for court, should anyone try to sue them over unfair dismissal.