Re: Which begs the question
"I also grew up in the UK and was taught the correct meaning of "begging the question" at school; it is basically circular reasoning."
The OED lists both definitions, noting that the meaning 'invite the obvious question' is by far the commonest use and has been in print for a hundred years. Neither meaning trumps the other; we are watching language mutate. Of course, avoiding the phrase reduces the attack surface of your prose and decrements its cliché count. But it was perfectly clear what she meant.