Think of the term RPG. Role playing game. It suggests the NPC is not playing as you, but you are pretending to be that NPC. That being said, I could see why the Me -> character -> npc can be a little annoying. If that's the case, I am sure you can read the options, select one and immediately skip the part where your character talks. I can see why it would be annoying to just want to cut to the part where the NPC says something rather than listen to your character say what you just read.
The issue I see with a voice acted protagonist, is I don't want him to go the route Star Wars The Old Republic game did (or even mass effect). The main quest is fully voiced in bioware games but the sidequests just reuse the same voices over and over again. Though honestly I could use less options in fallout and tes games, considering the NPC only responds to yes/no differently and the 3 different ways to say yes all yield the same response)
Also, just to be clear, the dragonborn was voiced in Skyrim. Sure it didnt have voice acted dialogue but he said his shouts outloud and there was no way to change his voice without mods. This wouldn't really be so different.
The change from fallout 2 to fallout 3 isn't fair. You say it doesn't matter they weren't behind fallout 2, but it is very important. Fallout 3 did not fail. It got a lot more sales than Fallout 2 so by that logic it succeeded. Also, yes the game was bought but it wasn't for its gameplay style it was for it's story and lore. Bethesda didn't ruin Fallout 1 and 2 the original producers stopped producing and bethesda picked it up to make their own version of it. If you want to complain about bethesda ruining fallout complain to the original producers who left the series behind anyways.