Thanks for the definition, I learned something today.
You're certainly right from a technical perspective, but from a usage one, I think you're going to get more confused users like me who may think that the game is slightly unprofessional for having a typo in the opening sequence when there's a similar, common word that would make more sense. In general, affect is not used as a noun in standard conversation -- the link above even mentions that it's a technical term for psychologists and psychiatrists.
There's also a bug in Crypt 3 at the riddle door where I tried to ask Rahel for help. I couldn't get it to work (it said that person is not here.) and eventually after asking Griffin for help (who told me to ask Rahel), I asked Rahel for help again and got stuck in an endless loop of conversation options.