Just how stupid can we get?

Surely we have reached rock bottom in the stagnant pool of political correctness, when it is not permitted to advertise a job for a reliable worker on the basis that it discriminated against those who are unreliable. Does this mean that to demand a qualified or experienced worker is unfair on those unqualified or inexperienced? There has to be a point beyond which we cannot go without losing touch with both common sense and the world of reality.
Some people clearly still believe in equality, and yet this has never been realistic. Our society only works because of inequality, it always has, and as long as there are people it always will. All animal populations are made up of individuals that are different. Some are stronger, fitter, prettier or more able to breed than others. Some are better fighters and some are better at finding food. It is this fundamental inequality that drives the process of evolution, and although those with religious faith would have us believe otherwise, the principles of evolution still apply to humans. Apart from biological inequalities we are also subject to inequalities of geographical and cultural bases and so although laudable in principle we do not even come close to equality of opportunity.
I hope that when I travel by air, that the pilot is far more able than I am in handling an aircraft. I hope that the surgeon to whom I entrust my life has not been given the job because someone thought that he deserved a chance, and I hope that the car that I drive has been designed and assembled by some sort of intelligence.