The Jensen girls are not the MC's family, but later in the story there is this character, who is MC's sister and they have a little sexual encounter, so the tag has every right to be there.
TBH I don't think so. As an incest game lover myself, that's exactly not what I am searching for when I filter for the incest tag. People usually search (or block) games that are centered around incest.
That's like smashing "voyerism" tag on a game which features only one scene where the MC watches for 10 seconds before stepping into the room. Some tags like "vaginal sex" are obligatory, but anything that's more of a fetish / something people specifically look for (or want to avoid) should only appear if the game has a bit more than 1% of its content to offer in that regard. At least until F95 gives us a better tagging system. Because the other way around, you could lose people who filter out incest, just because of that "little sexual encounter", while they probably wouldn't bother too much with this.
Another example of this problem is when games with 95% static images and 5 animations over 10 hours of content put the animation tag into the description. That's as well not what people are looking for who filter for animated games.
It quickly becomes frustrating because often one will find himself spending a lot of time figuring out which of the games that popped up in the search actually largely offer what you were looking for, when you filtered for that particular tag.
