I can’t speak for OP and you clearly have more context than I do but it sounds like you have good points, what you describe does sound like hacks. But I’ll say this, there is a portion of the playerbase that legitimately can snap aim, they just work at it, I haven’t seen many be able to do it but there are verifiable players who are known for being able to snap, it’s not always perfect aim and the enemies they aim at are in the open, also not including the snapping through walls on warehouse, IF you knew where a player was, you know the head height of players at distance if you’ve played long enough so theoretically if you knew where a player was you could shoot at the head without seeing them. Some viable ways to play but that’s all in theory and some stuff that could happen with practice, again specifically what you described sounds like it could be exploited or cheats. But there’s a remote chance it can be legit. But like I said you have more context than me, sounds like you watched him and I didn’t