porn videos/movies, and porn games are different. men have no problem seeing lesbian porn videos because then they are the player, but when playing the game they replace the guy with themselves, and think from that perspective, which is the reason for NTR complains too. if the game is pure lesbian (no bisexual), you play as a woman, then it's hard to perform that replacement process. so men hesitate to play such games. nobody does usually like to play a game to which they can't relate. this statistics has a point, look after lesbian hentai, milf, stepmom search terms, games with these themes are so much popular in porn game industry too. there are dedicated sites for translating hentai porn games, milf, stepmom games are overwhelmly successful. other ones are mom, teen. it explains why incest games are also popular in porn game industry. and finally you don't need polls to figure out what is popular or not, just be active in some of the visual novel forums, then you will find out what themes people like most, what they hate most too.