I would not be supprised if Teresa May was placed in power with the express goal of fumbling the exit.

Hanlon's Razor applies here. (As does, since it's pretty clear our government doesn't know what they're doing, Occam's.)

Not disagreeing... would the Peters principal also apply? Intentionally hired to be incompetent that would also imply malice? Those involved may have the best intentions, so no malice, and we're back to incompetence. Either way, if I were in charge and I needed someone to fumble it I would have picked her. That mail campaign asking people to self identify for deportation was the most anti Brexit thing I could imagine her doing.

The Peter Principle would imply she was a good home secretary. She was actually kind of a disaster, but spent her days keeping out of the press. It's fairly clear her instincts remain to disclose as little information as possible to the press. It's less clear that's a good idea as PM.

Edit: She was, however, probably the best candidate the party had. Ironically, the Labour Party has at least five people in parliament right now who'd make a better Prime Minister, but a fair few of those aren't even in the shadow cabinet.

You're correct. I read the principal incorrectly. The Peter principal requires that a person is competent before being promoted. The Dilbert principle doesn't apply either as management has too much power. There must be a principle where politically the most incompetent person you promote owes you the biggest favors.

I don't know of one. But Gove and Johnson both deserve be their own laws. :)