I want someone professional in his job. Training gets rid of things like nerves, because you can rely on the training. You seem to forget they are doing a job.
Yeah, it's the kind of error you'd expect at best from a talented but very inexperienced officer.
Which to be fair is exactly what NuKirk is. Everything about him really does make sense... except his being a Captain at this stage of his life.
On the scale of 1 to "not raising shields when the Reliant is approaching under proven bullshit circumstances", it's a 1.
Kirk is imperfect, in any timeline, and no movie can survive a hostile reviewing. Anyone's favourite episode or movie can be similarly selectively nitpicked.