When I first bought a PC one of the first things I did was mod Fallout 3 until it crashed. The mod in the image is called Acquired Immunity and I assume I downloaded it when I was looking for perk mods such as Ultimate Perk Pack. Essentially instead of siding with either faction in The Pitt DLC it allowed you to eat the baby who has an immunity to radiation to get the immunity yourself. Considering how dark the Fallout series can be at times (ex. Meat of the Champions perk in Fallout New Vegas) and how it was implemented I didn’t really question it too much.
I’ve also experienced something similar with full dialogue mods for Fallout 4.
I also wanted to mention there’s a Fallout community on Lemmy if you are interested.
I was wondering what mods did you assume were part of the base-game?
I was disappointed to learn that Virgil sitting in a plastic chair was just a mod