Kestrel was also adapted for anti-aircraft. Unlike it's antitank implosion, largely due to the tank's contact with the ground, Kestrel acts like a high velocity spear puncturing the thin A/C skin and exiting the opposite side.
Just a thought.
Early in Vietnam we had an H21 shot down with a crossbow. It pass through an open door and hit a hydraulic line and forced it to land.
What would you think the range and guidance of that missile is. I have never seen one, but I am going to guess that once she goes down range a bit, those three penetrators will be ejected forward with much energy. Look at them close and you will note they have little fins on them for stability.
I sent in several suggestions on ammunition. Some were actually used and some were not. I always wanted to see a fluchete round for the 120mm main gun on the tank with fluchettes about as large as your thumb that worked like the beehive rounds or the old (true) sharpnel rounds that had an ejection charge in the projectile that would go off down range.
My guess is why the weapon you posted was developed, was that it was hard to penetrate a modern main battle tank with missile by use of a shaped charge. This would do it with kenetic energy.