At present this is not a BG game. It may be a D&D game but it is not a BG game. It could end up a BG game, but would have to undergo drastic changes from what we've seen thus far, which I highly doubt will happen. So claiming that we all have to wait until the game is released to make a judgment is fallacy.
Except the whole point, which I keep saying, is that this is a pre-alpha.
Pre-alphas change drastically all the time. Pre-alphas are not meant to show what the end game will look like.
This is why game commercials and videos usually say 'Pre-alpha/development footage is not an indication of the finished product' in tiny letters.
So asking people to cool their horses and wait until it's bloody playable is actually a reasonable thing to do.