There is a lot of this sort of stuff on the Internet, especially on blogs that focus on retro/vintage ephemera. The attitude displayed by the writers and commenters is generally one of self-righteous 'shock' and almost a kind of perverse relish in looking at the taboo advertisements displayed for your (dis)approval in the article.
People often disparage the Victorian era for their 'prudishness' and what is called 'excessive' modesty today. The reticence of Victorians on sexual matters is ridiculed and mocked, with emphasis on how the Victorians sought out titillation in the sights and behaviors they condemned as sinful. The modern PC prudes are guilty of that very thing; they get some kind of thrill from seeking out the forbidden, that is, the politically incorrect. This kind of thing is a sort of perverse pleasure for the PC crowd. They get a chance to show off their 'tolerant and enlightened' attitudes and to have a laugh at the expense of those backward and disgraceful people who were our parents and grandparents.
The whole message inherent in this kind of thing is: thank 'the gods' that we are so much more enlightened and so much more sensitive than those troglodytes of a few decades ago.
What a lot of pious PC prigs. The world will be a better and much more relaxed place once 'political correctness' is a thing of the past.