Cheat on online matches? Sure, why not. Private cheats are really hard to detectEh after the whole mouse hacks on LAN controversy/bans; I'll never trust CSGO pro players. We're talking thousands of dollars here; why wouldn't pro players invest in expensive and hard to detect hacks in the same way many athletes manage to dope undetected?
Cheat on big LANs where equipment is checked? Yeah, not buying that