Comment by alexitorg

Here are a few ideas trends that are affecting this: -Publishing is getting less profitable so there are less books being published by the big companies. -Publishing companies are grow 70-80% woman and are choosing female preferred books -Most published fiction readers are female (I'm not sure what came first women reading more books or publishes publishing less male friendly books) -Romance is the biggest genre fiction and that has heaps of dragons, werewolves and vampires (hence why those terms haven't dropped off) -Self published books aren't included in isfdb, lots of male authors self publish -Amazon best selling sci/fi, cyberpunk lists now have heaps of self-published books (maybe most) -Most of this stuff is pretty pulpy, but it is really common to have starships and space travel in these books.