I Captain a 220 seat airliner all over Europe. I passed my ATPL exams and flights tests all first time. I pass all my sim checks with good marks.
I am middle class, failed all my A levels and have no degree.
I know of many Captains with similar backgrounds to me and I know many with very different backgrounds to me. It is impossible to to pigeon hole pilots in a way that a previous poster suggests.
The posters on the forum that this thread links to are ignorant. They have their facts wrong.
I do, however, think that we will have pilotless jetliners in the future, but it is a long way off for now, there is far too much regulation and technical issues to overcome first.