after turning 2D characters into 3D, they look a bit strange to me. Am I the only one who thinks this way?
PS: I'm not criticizing Nagoo's work.
Nope - after "natural" 3D, cel shading does throw you off, especially when it is "new" work. But that is natural, like any switch to something vastly different.
The catch with it is (and this both ties into whether to "criticize the work" or not AND applies to most animation): a still conveys almost nothing about the animation itself - if you pick a random movie or even a game, you can with very high certainty get a bunch of shots that would make the characters look goofy and/or janky in some way. "Not a matter of luck, just a matter of time", as the saying goes.
And hiding that via animation is the "work" I am going to be looking at.