Famously neither Stephen Byers nor Barbara Castle held driving licences when they were transport secretary. I don't think it's a prerequisite - but it helps.

In this case, I'd liken it to a transport secretary saying "Why can't I just put diesel into my car if it's cheaper?" or "So, you say I have to buy a ticket to get a train? Where would I get one from?"

There's a lot wrong with the way IT professionals provide information, I accept that. But I cannot accept that someone who hopes to be a government minister would not take five minutes out of her day to understand a fairly critical part of her brief.