Y'know what had pretty crappy face tech and animations? The Mass Effect trilogy. In fact, pretty much anything that's not L.A. Noire or Halo's 4 and 5. Facial animation in games is something that just needs to be serviceable enough - as your mind will do the rest. Do you remember how the original Metal Gear Solid handled it? It was literally heads bobbing alongside the dialogue to simulate a conversation, and that became one of the most cinematic games of all time. Put simply, although Fallout is a highly immersive experience peppered with character interaction, facial animation not a selling point in a way that would necessitate Bethesda prioritising this over... anything else. Besides, when was the last time you really said to yourself "Oh I really wanted to enjoy that, but the facial animation was just too bad?" Get over yourselves. You're going to wander the wastelands, approach any and all in sight and have a few thousand different conversations, and not once - providing the script is solid - should you ever focus on how the words look coming out of someones mouth, as oppose to what they're actually saying.