Thank you for your response. After discussing with some administrators from other servers and having them review my case, they assisted me in drafting this reply.
1) How aimbot works in programming
a) Closest to crosshair vs FOV aimbot
In programming, to simulate a skin aimbot (the one visible in your friend's video), you need to move the camera to a specific location in the X Y axis. How is this achieved? You filter a stream of people appearing on the screen, selecting the one closest to your aim or, if using FOV, within the FOV. FOV can be problematic because if someone occupies more space in it, the aim might jump to that target. Let's assume the aimbot selects the one closest to the mouse.
This screenshot is just before the presumed lock, which seems suspicious, but could be influenced by various factors. I'll address this later. Notice the shorter distance from where the aim should be to the "non-fighting player" compared to the player he was engaging. Regarding FOV usage, I haven't observed the aimbot fail to target another player in the entire video, nor in his gameplay. Additionally, when the biker was present and occupied more of the FOV, Bendary still didn't shoot him but managed to hit the other player well. Hence, I dismiss the FOV theory.
b) How do we know where to move the camera?
As mentioned earlier, we stream the players on screen, but Bendary's shots seem improbable. Here's why:
This is where he shot. When using an aimbot, you can target the closest bone or a selected list of bones to move the camera to. Here's the list:
The aim jumped to the right side of his head, not even hitting his head, but his HAT, which can't be attributed to aimbot since no reasonable person would create a "hat aimbot." One could argue there's an option to disable the aimbot upon reaching the body. However, if that were the case, the aim would halt when it reached the left center of his body, which didn't happen. So, to summarize, the aimbot has to lock onto one of the bones. The only way to prevent this would be to include an "on-body" option, but then it would stop upon hitting the skin, which didn't occur. Thus, we can assume he used a "hat aimbot."
2) General Mouse Movements
Analyzing other scenarios in the video, I noticed similar mouse movements where he didn't target him directly. There were instances where he aimed at the floor after a similar movement, suggesting he might have had a lucky shot there.
Conclusion:
I personally don't believe this is aimbot. It could also be due to Bandicam, known to skip frames and auto-complete them. Additionally, I can't think of any aimbot that would behave in this manner. I've seen him make similar camera movements and miss, so I would conclude he's not using aimbot, or I'll keep him on my watch list until I'm certain. With all due respect, I think banning him for this would be a mistake. I understand how one can appear suspicious at times. Thank you for considering my perspective.
