Well... this game is still in very Early gamestage. So... describtion sound good but :
1. this depends what is their targer-- > for now it's looks more like dayz competitor. Not every one like PVP focused games.
2. There 2 gameplays but... hm still don't show too much to say. Well similiar thing i saw in a lot of never released Early access games.
So for now... Vein looks just ok. But it's not competitor for 7dtd for now. Why? this like saying that 2 yo kid will be competitor for 18 football player. In theory this is possible but it's too early too say because a lot of thing can happens until will be released.
Update : i check discusion and if this same studio that create Dead matter that's bad sign