The stage we're getting in on now (lpha or early beta) is always the roughest time for smaller studios. No matter how solid they think their game is when you add in thousands of new testers game breaking bugs, cheats, exploits, etc, are going to be found and make it rough for a while. But that's why it's Alpha/Beta.
As long as the Dev team keeps up on the updates, and doesn't get discouraged by the constant issues they're going to be plagued with when you add that many new players I'd say they have a legit chance in the long run.
People paid $30 just to play DayZ. A mod that was in alpha with, at the time, no standalone game mentioned. This games movements and everything have become much more fluid since all those pre-alpha videos.
This game doesnt look terrible by any means. Yes there are placeholder animations and sounds, because its in ALPHA. If you follow this game at all, which the idiot in that video clearly doesnt, you would know that these sounds and animations are just placeholders.
They also paid that to play DayZ because there wasn't anything else like it with the kind of support it had at the time.
And even in the newest videos, animations are garbage.
That being said, I bought the $30 pack because the game has potential, and it's worth $30 to me to find out if it's going to be good or a train wreck. Of course maybe they are banking on that people who aren't won over by their promises will still buy out of curiosity (like me).