The idea and the capability is nowhere near as new as the article implies. The slow adoption my the US and Israel is motivated more by the collateral damage concerns that caused the Russians to scrap the Drozd system in 1980. As far as I know, Arena has similar issues, just not nearly as badly as Drozd (which basically shot a 107mm fragmentation grenade at the incoming round).
My mind immediately thinks of the poor dismounted infantry near this thing when its engaged.
We'll quickly be approaching the debate similar to the self driving car. Does it crash and kill the driver to protect pedestrians. or vice versa. Protect the men or the tank?
The military is better at resolving these sorts of issues. Tanks are a force multiplier, Keeping them in the fight is important (worth the collateral?). But cheap options work aswell. Plenty of men alive and LAVs still rolling along thanks to bar armour.
I'm actually surprised the Marines didn't fit the phones as soon as they transitioned to the M1. I'm guessing they didn't have budget, since they were getting post-Cold-War Army hand-me-downs.