This isn't NS OP 2.1, that mod is still not ready and it could take several more months.
This is a merge between OGSE 0693 and NS OP 2, done by DSH
It uses OGSE engine, inventory, some anomalies, some bug fixes and features as well. The story/quests though are totally from OP 2, it does not include OGSE quests. Also, in this merge, most quests that involve stash hunting were removed.
The lets player himself mentions at the beginning of the video that he will play this until OP 2.1 is ready.