I have no idea why this incorrect use of the term drives me so nuts; however, you'd think a blog post about English words and Wordle wouldn't make this mistake.
I suppose some time in the future, someone will invent a new phrase meaning "assuming your conclusion".
To me, "begging the question" doesn't mean assuming the conclusion in particular, it just means that some of the premises used are less obvious than they are being passed off as. Assuming the conclusion is merely an especially egregious form of that.