All these corporations need is "plausible deniability"
For example, if you code the story in a way that you can manually input your relationshipo with a sexable character and nothing in the narrative specifically hints any relation outside what the user inputs, if people inputs "mom" or "sister" it's on the user
If you make a game highly modable, you can't be made responsible if people make a shady mod
You can't even blame de mods devs if they made their mods so customizable that someone adds a 'dark side' to something like whicked whims
In the case of a game like Lilith's Throne, modding is so easy that anything that gets banned could be stripped and the community can easily bring it back without making the dev responsible