It definitely has its warts, but I prefer having a VCU under the car to a Haldex... in the same way, I'd rather have a D1's locking diff to the D2's reliance on traction control. Having said that, it would be great if it had a warning system for mismatched tyres in the same way various Haldex implementations do.
It is a cheap way of providing four wheel drive. The way the VCU has to be used in this type of system as both a centre diff and a drive component means the VCU is a consumable. It will wear out that is certain. If that wear out is not monitored to ensure it is still functioning as intended it will damage other components. Simple as that.