There are a few issues with your post. The first being the OP already said he is an Alpha backer.
The argument here wasn't about whether 3rd person cameras should or shouldn't be allowed and so I don't believe the post you described was silly as it was addressing the point the OP made.
People who say the only reason for the not being a 3rd person view is for advantage in some combat situations is also not correct.
A lot of the issues you describe isn't because people are evangelising FD, it's because people come straight on demanding to know why something hasn't been included they think should be, and then when they're told within the first few posts why it hasn't, they just moan that it's in every other game so why isn't it in this one. In my opinion that is a very lame argument, one of the best things about this game is that it's not like every other.
I'm not saying that I in any way have the patience of a saint, but if others can't be bothered to do a bit of searching for their answers first and then will not accept any of the explanations given to them, it's hard not to get frustrated. Especially when people then come in and accuse you of blindly defending the game with no idea of anything about you.
You may find it completely irrelevant, but I have 40 open support tickets at the moment, why, because I want this game to be as good as it can be on release. If you and others would rather spend more time arguing about whether something should or shouldn't be in the game, when the decisions have already been made then fine, but don't moan about niggling issues once the game is released.
3rd person cameras drones are coming, just wait. I don't think the advertising needs to be changed.