The word ‘selling point’ usually implies that something will sell based on that, yet the majority of players doesn’t care about realism at all, so it’s hardly a selling point. Not to mention that realism is pretty much the opposite to what a game is.
When you really have a look at the game - nothing about it is realistic, just more realistic than other games, but in turn everything is just more complicated and incovenient - bet that is going to sell so well with todays audience.
In reality, the main selling point of the game will be the great graphics and world design. Just sad all of that is wasted on the poor gameplay and content.
By the way, of course the thing they released as a beta can hardly be considered beta by definition. It was missing most crafting features, most weapons, most content, saving / loading didn’t work properly, neither did sleeping, fast traveling. But it’s better that way. Because if the full game has a similar amount of content to the beta, it’s going to flop.