Nonsense. Examiners want you to pass. Why should they care how much you spend on test fees? They don't work on commission, they won't get paid more for forcing you to take the test again. Most examiners are ex-driving instructors, who know how the learning experience goes and want to see you become a competent, safe driver. For that reason they're going to be strict, in order to make you a better driver. To make our roads safer. And of course, because they themselves will get assessed from time to time, they have to uphold the standards as part of their job.