He is not Playing with NAR, as you can see his armour is Krupp 2, but i have seen this a lot, a lot of people install your mod wrong, here are on Reddit.
But i think that the gist of what he is saying is right:
We unlocked 100k tons ships in 1929, when there is no chance in hell that a 100k ton ship was going to get built before 1941-42 IRL, Treaties or not.
Also we unlock 7500 tons DDs in 1936, here again, no chance in hell that would happen before 1944 at the earliest.
There are a lot of tech nodes that should get shifted 5-10 years forward IMHO