As far as your specific phrasing, it's worth noting there's no actual risk to idling a VAC game. In short, even if the rumored 'random VAC bans' are true, the likelihood of you getting one even if you do decide to run a VAC game with idling software active would be a singularly rare event (and, presumably, no more likely than if you were doing anything else involving a VAC game). It's also worth noting that idling software got added to Valve's list of VAC-conflicting software (which is a soft confirmation on Valve's part that using idling software should consistently get you a disconnection error message instead of any actual risk of negative VAC interaction). It's worth noting that there was never actually a single confirmed instance of that happening- it was always just a 'what if'-styled, rumored possibility.
