[xenadu02]

That's correct. The ability to cheat relies on the fact that servers don't actually model the client's view of the world to any fidelity. The server sends you information about the world you can't see so it doesn't have to do the culling. It accepts clearly impossible input that is obviously not human because statistical analysis would require some data scientists who are quite difficult to hire at the bargain-basement rates game companies pay.

You don't even need a hypervisor to bypass this, just a driver that pretends to be their kernel driver.

[int_19h]

Servers usually try to do culling, if only to optimize network traffic. But they can't cull in real time, because the visual lag from round-trip to the server would be too much; and if the client doesn't wait for the server, then the player would see gaps in the world if they move around fast enough that server can't catch up. So they pessimistically provide more data than the client "should "know about.