It's not just the fantasy/sci-fi/supernatural themes that seem to get some Taboo Incest readers offside, it can happen in other stories too set in the very real world.
One I've encountered is sports, I admit I love sports so sports frequently appear in my stories. This can never do, much like holidays. Clearly some of the readers do not want to go on a vacation, especially to Australia. Oh and humour, as I noted before. A slacker-surfer dude story I wrote for the Summer Loving contest a few years back seemed to get people offside, maybe not enough Generation X readers saw it as this was the main generation it would appeal to. And at times I've had pushback about historical themes in some of my stories set years in the past, one guy grumbled about a story I set in post-WW2 England being hopelessly inaccurate as he apparently lived in this era, which would have made him close to 90 much like the characters in the story if still living today. I've never known if this guy was serious, or perhaps an 18-year-old troll from America who has never been to England much less lived in the 1930s, 1940s and 1950s?
There's also I've noticed a reluctance to accept different types of taboo stories, fetishes in the stories or even Incest-Taboo scenarios that don't come up very often. For example readers did not seem to like a story about a slacker ne'er do well 40 year old brother and his studious and intelligent 18-year-old half sister who went urban exploring in an abandoned theme park, even though half sibling stories are not common and urban exploring stories even less so. Some readers of the same story were accepting of them having sex in 'normal' situations, but condemned scenes when they continued having sex when the sister got her period. Go figure.
