HomeschoolDad:
Sounds like a pretty decent education and career to me. Maybe not the highest education in the world, but demonstrates that he was basically a fairly intelligent, educated man.
Hitchens was certainly intelligent and knowledgeable, but I wouldn’t read too much into his being educated at Oxford. He “went up” to Oxford (as they say) in 1967. Things were different in those days to how they are today.
Hitchens was the son of a commander in the Royal Navy and was educated at The Leys School, a highly prestigious public school in Cambridge. In the 1960s, Oxford and Cambridge would still have been dominated by boys coming up from the public schools. Some colleges even had arrangements with particular public schools whereby some places at the college, sometimes with scholarships attached, were reserved for old boys of those schools, although I do not believe that The Leys School itself had any such arrangements. In the 1960s, admission to Oxford or Cambridge would not have been automatic for boys from public schools, but the admissions process would not have been anything like as competitive as it is today.
Also worth noting is that in 1967 all of Oxford’s colleges, with the exception of the graduate colleges, were single-sex. While girls would have made up 50% of the population of potential applicants, only five out of the university’s (then) 28 undergraduate colleges were women’s colleges, meaning that boys had almost five times as many colleges to which they could apply. With 50% of the population competing for admission to five colleges and the other 50% competing for admission to 23 colleges, boys obviously had much less competition than they do today.
A third-class degree at a British university is really so bad that one would almost have to make an effort to get one. In US terms, a third is equivalent to a GPA of 2.3-2.7 or a letter grade C+/B-. One can only assume that Hitchens spent his time at Oxford focusing on something other than his degree course. He was presumably capable of doing better, so the only plausible explanation is that he spent his time there engaging in extracurricular activities and having a good time