These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
It gets better than simply being the inspiration for Ridley Scott's Alien - Giger also helped design the facehuggers and chestbursters, as well as some of the scenery. And you can see genitalia in all of it.