You have absolutely no idea of what you are talking about.
I was an organizational psychologist for 15+ years. Tests and interviews are done to measure how well an individual fits with the hiring company's needs for a particular position. Every company has different profiles for different jobs. If anything, many companies have a positive bias for those who score high on cognitive ability tests. Thus, they ignore other factors that are important for job success.
I admit I was quite a skeptic, but the results at my company make me believe there is something to these tests. We use the DISC assessment, which tries to measure your Dominance, Interpersonal, Steadiness, and Compliance as compared to the average.
The test tries to predict a person's preferred way of working with others, not how successful they will be. Different DISC scores often come up with different ways to solve problems. On the other hand, you can often see how certain scores may have trouble working together. I have seen two off the chart high Ds on a team and you end up with a mess as each tries to get his way.