see that can backfire hard for example he has 50 patrons right now, lets say 20 vote for something and the other is split all into other options 10 in one 10 in another 5 in one 5 in another (or whatever as long as its lower then the first 20) congrates he please 20 of his fans but also potentially pissed off 30 of his fans in the process which some or all can stop supporting at that time if they really don't like that content so i'd argue it would've been better not to listen to the major vote (sure it could work out but its still a gamble each time)
or instead of listen to those 20 he could potentially gain x number of new subs for lack of said fetish. the more fetishes you add the more likely theres something someone won't like and won't bother subbing based on that (in other words you can be scaring off potential customers for doing whatever your current patrons says.)
I'm of the opinion a Dev should make the game what they want it to be and not do polls or etc to have people vote on the content. i have seen to many games go downhill fast and crash and burned just from letting the subs dictate the content, Devs should just stick true with themself and make the story they want not what others demand, if all devs did the vote thing for content every game on this site would be the exact same cause the 3 most demands you hear all the time is 1, incest, 2, harem, 3, NTR/No NTR. so all games will just be an Incest Harem with or without NTR, would they games be a blast if that was your only 2 options?