That’s fair. Not every update will be everyone. I also agree that Mila wouldn’t be the type to use drugs. However, I always like it when RPGs give you the option to do something you probably shouldn’t (like killing off Bianca, for example). It doesn’t affect the story, but it changes the way you view Mila.
You are able to easily report the dealer if you are uninterested in that content. Doing this completes that side quest and unlocks the images in the pic gallery.