I dismissed that quote because we're not arguing about whether Lena should be used or not. That was never the question in this entire chain of comments.
> The question is ""How is Lenna's picture disturbing or suggestive?"
Right. Which is a subset of the possible reasons to not use it. Everything about playboy is outside that subset, and does not answer the question, despite being a reason not to use it.
Much like "It's a violation of copyright" would also be a reason not to use the image that doesn't answer the question.
There is a big difference between "the association with playboy is disturbing" and "the picture is disturbing".
The O'Leary quote seems to be talking entirely about the picture, the 512x512 one.
You've given a lot of resources for the former, but they were asking about the latter.
And while "suggestive" is pretty subjective, "woman with bare shoulder" is not self-evidently suggestive.