I watched up to 50k and realized there was no real evidence of hacks.
Yes, he is a little jerky at times (especially in the beginning), but it's not limited to his shooting, and not consistent with any type of hack.
Yes, he gets an EXTREMELY lucky/good shot at 18k, however, he was bashed and there is no way to tell what his crosshair looked like.
Tom, he could hear you at 17k, atleast, I can. (just incase you're wondering LOL. You seemed baffled).
Beyond that, even if he was hacking, he was warned early on like you said and there is not enough evidence in this demo for a perma ban.
I vote unban.