It's actually a very good point when you take into consideration the origin of the image. From [1]: “Lena Söderberg […] appeared as a Playmate in the November 1972 issue of Playboy magazine” and it is referring to this particular photo. Article in cyrilic (Russian?) [2] shows what the uncropped version look like. Putting things in context is important.
No, it's not. Because people do not use the second image, nobody sees it until you linked, and it cant "send a message to young women that they aren't welcome in this field".
All this is incredibly unimportant. You just made me waste 60 seconds of my life on a pointless thing and i want them back.
[1] https://en.wikipedia.org/wiki/Lena_S%C3%B6derberg
[2] http://dimka-jd.livejournal.com/3673381.html (NSFW)