We only claim to offer a hack that's equipped against VAC anticheat software. It may give you protection against other anticheat software but that is something we don't claim and something you take a risk using our hack with.
I'll throw my 2 cents in as a coder here. We code the games to be as safe as possible with the A/C they ship with. There is just no way we could possibly keep up with everything all the add-on A/C look for.