I really think some of these people would be better off just watching real porn rather than expecting AVNs to have the same density of sex acts and lack of story.
Absolutely. I don't wanna sound too pedantic, but AVNs are predominantly based on written words ("novel") as a medium. If you don't enjoy reading, and you resort to skim through the text to reach a handful of sexy images or a few seconds loop animation, you're probably looking in the wrong place for sexual gratification.
Granted, many AVNs suffer from an overabundance of text. And being a visual medium, the balance between the visual and written part of AVNs can differ, according to preference and skill of both the writer and the graphic artist, especially if they are the same person. That's where the personal taste of the player comes in. But if one's premise is "I don't like reading, I like to look at the sexy pictures", he will be let down most of the time, and he shouldn't be surprised that other people can enjoy reading some text and find it as stimulating as the visuals, and prefer their AVNs like that.