VACnet IS more effective than their previous system, but that's a LOW bar. CS:GO is still full of obvious spinbotters and wallhackers that get to ruin a hundred competitive games before eventually getting banned, and just grabbing a new account. VACnet for some reason can't even get the obvious stuff; Spinbotting looks nothing like a normal person playing, to the point that you could probably write "if average rotation rate > some high bar then ban" and do better