Zerginfestor
Learned
People being replaced by androids is also an idiotic plot point that seems cool at first, but goes nowhere. There isn't even an apparent point to it at all, because all it does is make everyone suspicious and fearful of The Institute when they could have remained underground and nobody would have bothered them. There were apparently incidents where synths malfunctioned and started killing people, but the immediate question is why? What causes a 3rd Gen to malfunction? Is The Institute intentionally killing people, and if so for what apparent reason? All of that is dropped completely once you find Shaun. The Railroad never seems to have any problem with malfunctioning Synths either. Even Glory, who you'd think would be a shoe-in for an Institute backdoor rampage scenario, stays free to the end. Anything that showed any kind of promise just ends up being mangled or forgotten. Fo4 treats its story elements the same way a child tries to juggle a chainsaw. It tries too early to be impressive and just ends up maiming itself in the attempt.
Basically any kind of question a normal person would have and would want to investigate, the game never follows through on. You don't even get the option to confront Father about the ethical issues of turning artificial people into slaves. You either work with him, or blow up everything he stands for. There's no in-between option, or even an option to reconcile the Institute with the wasteland.
I too never understood the WHY of it all. for some genius, Shaun is pretty fucking stupid. Instead of making legit, unique synths (which he sometimes does), he also somehow thinks replacing someone with a synth is a brilliant idea to bring "peace" between the Institute and Commonwealth. Just who in their fucking mind sees that as a great idea? He could've proven their greater good through using synths as builders/defenders, or shown the abilities of synths to survive some of the conditions in the wasteland, but nope, just fucks about and makes shit worst.