Just read on the Nukapedia wiki that the Scorched Plague conveniently killed off all humans in the Fallout 76 region prior to the game including the BOS and the Enclave.
Guess we now know why they are basically all irrelevant to the bigger Fallout picture.
Imagine if all of those factions had survived (*sigh * yes also the BOS and the Enclave). It could at least have made the world somewhat more interesting.
Goddammit, now I want to make a Single Player mod that does indeed bring all of these factions back and even integrate the Scorched into the Fallout universe that makes sense.
That is awful convenient. So the Scorched Plague killed EVERYONE, even guys in power armor...just oof. Bets on if West tek did it.