As with anything, you find some who like them out and some who don't. But for the majority of us guys it doesn't matter, we just like vaginas!!!
I have no idea why they seem to only show "flapless" ones in most pictures. Maybe the photographers and editors were all stunted at 6 years of age so they only like 6 year old style vaginas.
If you are talking about short outer lips so your inner vulva is showing, there was a special section for those in the old Hustler magazine. They called them "split beavers" and they were special because you could see all the "lovely parts" inside there.
Aparently there were rules back in the day that clasified porn magazines , it was a lot easier to sell porn magazines that did not show labia minora , some think that this created a false idea about what a " normal " p***y looked like and strangely affected women who dont have the bulk experience of different p***y like men do so the think they are abnormal if they dont look like what they have seen in a few easily available magazines
I havent found many pussys that i didnt want to get amongst
"Back in the day" porn was illegal in the US and the definition of "porn" was always in dispute. Playboy's first edition in 1953 had a center spread featuring Marilyn Monroe naked except for the airbrushed pubic hair to cover anything controversial. Airbrushed pu$$y hair was the norm for a decade or so until Penthouse showed up and began showing real pu$$y hair which God forbid, revealed there were lips under there. Outer lips only for a few more years until Larry Flynt came along with Hustler Magazine which actually showed what was inside those lips like labia minora. Of course that led to all kinds of lawsuits some of which ended up in SCOTUS. They did what they are most famous for in controversial cases, tossing it back to the lower courts.
Hustlers pictures of "split beavers" and eventually shaved ones especially in the "reader supplied" girls next door section was quite popular. The term "think pink" showed up as a way to call for open, shaved, pu$$ies and was soon hijacked by engine builder Ed Pink to advertise his dragster engines.
So the misconception that most pu$$ies do not have inner lips that are visible beyond the neatly closed outer lips can likely be blamed mainly on magazine publishers who were afraid of expensive legal battles. Larry Flynt was shot and paralyzed due to his publishing.