I see the Lib Dem’s defence of Ed Davy is he relied on what he was told by the PO.
This really speaks to the problem of MPs “with portfolio”, do they actually try and get across any of the detail or just sit with a fancy job title staring out the proverbial window? Leadership is a choice, they chose to lead. So lead.
I have responsibility’s for things in my day job and when someone tells me something I ask questions to validate their thinking and make sure they’ve thought about everything - when I relay what I’m told to my bosses it’s my responsibility to give them accurate information - I can’t later say what I was told wasn’t right blame that person. I don’t need to understand the topic at hand either, often I don’t, it’s just basic common sense.