I'm not personally bothered by it, but I've been around a while, so I can help with understanding the mindset of people who are bothered by it. There are also a lot of people who claim harem fans want all virgins, which is also a massive exaggeration (it just makes things noticeably easier for the dev to do it that way, and basically zero harem fans care about the unrealistic nature of an "all-virgins" group of LI girls).
Harem fans, almost universally, don't want to hear anything about their LIs' previous partners, if there are any. Even harem fans like me, who are open to more variety in the harem, still don't want to hear about the LIs' previous partners. Having an LI be an escort or porn star is an inherent mention of the LI's previous partners. Thus, the people who are most bothered by it want to be able to exclude that girl from the harem. It's happened in a ton of games, and the prostitute characters, even if they quit prostitution immediately upon joining the harem and never even see another dick, are invariably the least popular characters, and forced relationships with them turn people away from the game.
Probably best to just ignore the tag, then, and let incest fans find another game. Incest fans are, again almost universally, only interested in incest between the MC and a family member.
You'll also want to decide ahead of time whether you're going to include in-harem lesbian activity, and whether it will be avoidable, since some very vocal people dislike it.