https://www.seriousgmod.com/threads/report-against-raanevot.53502/ This report explains itself. It is completely rational to assume, from the damage logs alone, that the he was hacking on Vanilla, not to mention the hacking on west that took place by the same person in the span of an hour. Do you ACTUALLY need video evidence of hackers? Because this seems pretty clear-cut to me.
Yes. They require video evidence to ban people. Trust me, this is for the best, as the logs can paint a very one sided picture of a situation. In this case for example, the player may have just been spraying down groups. It isn't uncommon to get a few people bunched up close enough that the kills would be possible.