Only if there's one radar for every single silo. In a pre-emptive strike scenario there is bound to be more than one warhead per silo anyway, simply because you can't guarantee that every single warhead, or even every single missile, would work. Apart from that fragmentation alone has proven very difficult to time even against much slower missiles, e.g. PAC-2 is less effective than PAC-3, S-400s struggling not to get killed by ATACMs. The chances of this system stopping an ICBM warhead is somewhere between very little and nil and it leaves all your cities to be turned into ash with a single warhead. You also only get one chance with this system, fail and you're toast, but if I miss an endoatmospheric intercept of the boost vehicle, then I still have options.