Likely fake, sadly, no confirmation and ua channels say it’s fake.
It isn’t meant to intercept everything, just something, rest could be left to more conventional BMD. Kazakhstan in NATO sounds fun tho.
Road-mobile ICBMs, well, they are based in particular areas and Topol can only launch from a relatively small number of pre-determined sites, no idea why or on what’s the situation with Topol-M or Yars. Some are based close enough to Belarus to be in range of this proposed system, Belarus in NATO when
They only carry one warhead through, credible answer is to intercept the warheads outside the atmosphere, non-credible answer is to build a ground-to-ground strike capability into my system, then watch the launchers from orbit and strike before missiles are fully erected.
It’s non-credible missile defence.
The numbers are, however, not made up, and that’s what makes the post funny in my opinion. For example here is a table for ballistic ranges derived from missile velocity; of course, like, it’s the roughest of estimations, because Sprint burns out very quickly and also would possibly slow down quicker than a TBM due to base drag, this could be mitigated, but whatever.
No need to invent new stuff, Ukraine can use them for parts, as false targets on airfields, or just repair some of them.