Banning people off videoes is really hard to do, it have to be really blatant to spot it.
In CS its the same problem, we just had a situation in the Norwegian community that a player got banned for cheating over demo review. (Got unbanned when he appealed it tho.)
This is the shot he did that made him get banned (Was also some other stuff, but it was basicly this that started it all):
https://youtu.be/9fbmuKmw6Ag?t=183 (If anyone wanted to see).
I guess its easier to spot aimassitance/pulldowns in arma, but you still need a shit-ton of evidence to actually ban someone for it.
I personally think that the admins should show us the evidence they got on him. @Volunteer281
I'am not saying he was cheating or not, but that its hard banning someone off videos and bans could happen without the person actually cheating.