I didn't mention it myself because I don't want to turn into the feminism police of Less Wrong, but I'll put in my two cents since Emily brought it up. I found it distracting too - and I am bi, so it's not like I don't find women alluring, so I attribute my distraction entirely to the sense that it was directed at a presumed male audience. It would have been trivially easy to cut the example or replace it with a nice inclusive "members of the relevant sex(es)", and it would have demonstrated that there was conscious consideration of the full audience going on instead of thoughtless assumption.

Of course, including the example at all excludes asexuals. Do we have any of those here?