I personally find the mistranslation that changed "young woman" to "virgin" far more problematic.
The religious obsession with sex might have been averted if someone could have just been literate.
Ah, well.
By the way, even if "swim" and "walk" were different words, who's to say the person who did the 8,382,381 rewrite of that passage didn't take it upon themselves to change it outright?