gonna run through a few things here:
If you watch the full video and not just that news snippet (available from wikileaks.org)you can see all the problems the pilot and his gunner were facing at the time.
Im assuming you've watched the full video now, if you listen to the tone of their voices, they're semi-serious about the AK47's as they ask for permission to fire. Their tone changes and becomes a lot more serious and on task as soon as what they believe to be an RPG is sighted. It is at this time that they get permission to fire, though they wait until they have a clear shot before opening up to ensure they gotthe group in question. Notice in the video the amount of collateral damage is fairly minimal, they didn't blow through the house to get to the group, nor when they engage the van do they annihilate the wall the guy falls behind. They do not kill the wounded on the ground once they perceive they pose no more threat and instead wait for ground forces to move in and secure the area. Im not defending their actions but before anyone starts on a rant you need to see things from both perspectives.
The comment made by the journalist in the OP's video is fairly harsh, if you did this day in, day out for a year at a time, i am almost positive you would have a more relaxed attitude to it. If you didn't the stress would drive you crazy and like many, you would come back with ptsd or severe regrets.
The reason i thnk he links it to a computer game is because of COD mainly (obvious example) It looks fairly similar and that isnt the pilots fault, nor is it anyones. Credit to the guys at IW for making something that realistic.
War has been raging for ages, since humans started at the very least, before fire arms, arrows, swords, spears, rocks, take your pick. Certainly there have been plenty of bloodthirsty tyrants over te centuries, but to dismiss all of this and liken it to a video game is pointless, even if it is just to undermine the aircrew in that video... if anything, any war game is like war, shock horror, thats what its based on. Just my 2 cents.