I think Theresa May is a fantastic example actually and kind of shows just how much politics has changed since the episode aired. F- me, if saying that Theresa May looks tired would be enough to get rid of her, she would have gone immediately after the catastrophe of the last election.
And as for people being worried of the next Tory leader I disagree: its Corbyn and whoever is leading the main Brexit party that they are scared of. The hardline Brexiters and Remainers in the Tories would love to get rid of her. They already tried once.