Well, considering that Kirk didn't have the transwarp beaming equation that was used to help save Earth, Spock's plan was the right course of action to take.Yes since it was all thanks to Kirk taking the initiative. Spock wanted to go to the Laurentian system to let Starfleet decide what to do while Nero destroyed Earth and goodness knows which other planets.
So Nero killing billions in the mean time is okay if they get enough ships to stop him possibly take a nasty beating to do it and have the 23rd century Romulans or the Klingons possibly take advantage of the situation and invade, good to know.
And when Kirk did take command of the Enterprise, it was Spock who suggested that he'd be the one to beam aboard the Narada, meld with one of the Romulans to find the location of Pike and where the black hole device was located. That wasn't Kirk's idea.
Yeah um how did that work out again?
Seriously, we know Kirk isn't perfect (neither the old nor the new one) but that's precisely one of the many reasons why MOST of us like him.
Old Kirk's flaws were dealt with, this NuKirk's flaws were not.
How exactly were old Kirk's flaws dealt with and NuKirk's not cause just saying it without examples doesn't mean shit.