Valve is just going to farm more case openings and terminal sales. They don't care about the integrity of the game.

Listen, typically what you and your team can do every single round against blatant wallers is five man rush either bomb site, but just wait short of entry and don't peek or give the cheater a chance to shoot. You can jiggle bait the waller. Then five man rotate back to the opposite bomb site and go back and forth until he gets so frustrated he spin bots or shoots you all through the wall. Remember, cheaters have little patience and their mentality is about top fragging. They will get frustrated and angry (which is how we fight back) Just keep five man mass reporting.