I've flipped through the slides and if I'd been in that presentation I would have had a very low opinion of the speaker. Not because I've got a problem with pornography, but because his presentation shows a complete lack of judgment.
If you are making a public presentation you need to realize that your standards are not shared by everyone in the audience so you need to tailor your presentation to them. There were probably plenty of people happy to see softcore pornography that day, some people who wished it had been hardcore, and others who felt uncomfortable. There's not an obvious male/female mapping to those categories.
Suppose it hadn't been pornography, but had been slides making fun of Christianity, or slides showing graphic depictions of surgery, or jokes aimed at a minority based on skin color. You can imagine the audience splitting into groups that were happy with that, unhappy and indifferent.
But why split your audience? They were there to hear about CouchDB, not to understand the speaker's personal beliefs or preferences.
In addition to having a low opinion of the speaker, I would have been uncomfortable with the images knowing that others in the audience were likely offended and didn't say anything.
And lastly, his metaphor is broken. So CouchDB performs like a porn star? Good to know. To me performing like a porn star means pretending to do something and not doing the real thing. I guess CouchDB is some sort of phony database that looks good at first glance but is just faking it.