Shin was not a stalker.
He had never aspired to be one. Even in a thousand lifetimes, he would never stalk. What he did was not an act of stalking. He merely observed how Lasyana would eliminate Zagabob and his army. Beyond that, he intended to evaluate the fugitive from Camelot.
Through his binoculars, Shin could clearly see the battle more than 9 km away from where he was monitoring. He could have shortened the distance for a better view, but the risk of being detected was high. Shin couldn't underestimate Delphia's analytical skill. That woman was troublesome; she would notice his presence if he tried to get closer.
Therefore, Shin observed from a distance.
And Shin was not disappointed with what he saw.