You have more faith in the mindset of the civil servant than me.None of which explains "accountability leading to numbskull decisions".
If you know you will be held accountable for any decision you make, you'll make damn sure it's a good one (or make no decision at all).
Not a numbskull one.
If this was a mistake its almost unforgivable, but it is just possible the foi team reasoned that the info could be disclosed, this is certainly backed up by the guidance:
"Employees who represent their authority to the outside world should also expect that their authority will disclose their names"
This is still objectively a numbskull decision, but it is clear there is huge expectation to give people what they ask for.
Blup