Just watched it, I didn't see aimbot at all. At first he was just fighting headcrabs, and was missing those, went inside and fought some more, etc. Then he shoots an AFK guy in the head, took his sweet time to aim, calls another guy out that he's shooting at to buy himself time, kills the guy after missing with the pistol a few times, rifles him, Sprite tells him to ID the body, he pulls out an empty shotgun and makes it click, runs from sprite or whoever's shooting at him, goes into a room and uses his pistol to fire at a guy outside the door, playing peekaboo with them, missing shots until he's killed. Innocent win. Demo ends.
Didn't seem like aimbot at all. My aim is better than that.