I don't begrudge this man his pension as he's probably earned it. These Permanent Secretaries are in effect the full-time minister's of their particular department and carry the can for years on end, unlike their transient political "masters" who can be and are, in one ministry one week and another the next. These ministers may like to think that they take decisions but in reality they can't, because often they are not in the job long enough to know where the department is, let alone know how it works or even what it does. They are presented with choices like six or two threes and it couldn't be otherwise, when you think of a new government which can be comprised (and no doubt has been) of people with absolutely no skills at all beyond being good at arguing.
Then there's the time thing - subtract the 6 month's holiday, factor in the short week, account for Party and constituency time and you are left with 20% of fa to learn about the job and to carry it out...