I can assure you the best students in the best schools want to be tested so you don't have 10 people ranked 1 in a subject. They would rather the exam be very hard than very easy. It is the difference between state ranking and being outside of the top 10 in the state, or the difference between Band 5 and 6.
And you kind of missed the point. The question is, "is it unfair?". It is irrelevant if students want free/quick marks or not, that doesn't matter - the fact is if students aren't being tested rigorously and effectively, they aren't being fairly tested to a high level of standard. If you compare their level of education and testing to those at say JR or NSB/NSG, then it isn't fair to them. Free/quick marks in school assessments is pointless, you want free/quick marks in the HSC exam when it counts. They aren't going to achieve that if they aren't being tested rigorously and effectively at school assessment level. Then those students complain and wonder why they did great at school, but bombed out in the HSC exams...go figure.
Maybe you don't give a shit, but to those who do care about their education, they do give a shit about it.