All right, i've been paying close attention to the story of the game
Robert Norton is the one of the few well built characters in this game,
-In the begining we see Norton and Carver come in to save Isaac from Dannik, and then , Norton risks his life to help Isaac, and to go help Ellie, so far so good
-when Norton's ship gets destroyed by the mines, and they get stuck in space, despite the love triangle (nausiating unnecessary drama, and Ellie being a total undecided bitch) he remains true to his mission and he wants to GET THE HELL OUT OF THERE. fair enough, considering the circumstances.
-then when everyone wants to go to the planet to "turn it off" he is the only one who disagrees, Isaac is having second thoughts,(Ellie, Carver,Santos all push to go to the planet) Norton is the only one who resists the moon's manipulation to "turn it off"
-When they get to the planet, and through spectacularly bad piloting skills and plot armor, their ship breaks apart but somehow they survive. OK so at this point they are stuck on Aegis VII, no food, surrounded by necros, given enough time, maybe they succumb to hunger and start eating necro flesh(we all know what happens then).
-So in despair, Norton clings to the only hope left to survive, he calls Danik, knowing full well Danik will come, as he is obsessed with the markers and Isaac, and he will bring ships (very important).Everyone else seems to not give a shit about a way out the planet and they play in to the marker/moon manipulation, especially Ellie and Santos, remember when Satos said "look how beautifull it is" about the frozen nexus creature? Yeah, Santos it totally not losing her mind
-and right before Isaac returns with the probe gun, to go inside the nexus creature( totally a good idea) OK at this point, right before Isaac returns with the probe gun, Norton LITERALLY BEGS ISAAC TO GO GET ONE OF DANIK's SHIPS AND GET OUT, (not entierly a bad idea). Can you imagine if you had to go fight Danik's men in order to comandeer a ship, maybe even have a ship on ship battle, with Isaac as pilot and Carver maning the gun controls? anyway, at least for a way out once they finish their mission, but no, Isaac being totally dumbed down to idiocy in DS3 he refuses.
-Then, at this point , Norton calls Danik and tells him where they are.Remember, up until this point Norton was still counting on Isaac's help to kill Danik and get to his ships, even though he called Danik here in the first place.
-After then the nexus creature revives, and with the help of plot armor , Isaac and Carver kill it, they blame everything on Norton, Even before he dies, Norton says in despair "This is all your fault, you encouraged her to come down here" -correct, Isaac did push to go to the planet. and
"between Danik's men shooting and us and whatever the hell that thing was , what chance do we have?"
As you can see, Norton is perhaps the only one who is NOT influenced by the markers and moon, he just wanted to survive and go home.He was being the most rational out of all of them. And if he did not call Danik in the first place even if they killed the moon, they all would have died either by the moon crash or staving or worse, because they had no ships.