Even if such a complicated APS works reliably, there are ways around it. It won't make Ivan invincible, just have to work at it a little bit.
If this is Arena III or IV, it has multiple sensors including IR and millimeter wave radar. Arena III has been shown to be able to resist jamming well enough to protect the tank despite that.
Pod of rockets is interesting, but it can see those and one optional function at the track commander’s discretion is basically counterbattery. You show up with a helicopter gunship and start rippling off FFAR rockets at the tank, the turret will snap around and the gun will elevate and track your helicopter, faster than the normal gun traverse which was already quick. All the gunner has to do is pull the trigger and send a 120mm greeting card to ruin your day.
Did I mention that Arena networks between multiple tanks operating together and can assign countermeasure targets for each tank in the unit? And it can fire at least 26 times before the system needs to be reloaded on each tank.
Every system has vulnerabilities. The Armada is being set up for future unmanned, networked operation, with possible autonomous search and destroy capability.
Once there is no crew to worry about, we have a very dangerous adversary.