I seriously doubt that as meteors travel much faster than missiles.
That may be, but the meteor would have been coming “towards” the earth, and the missile ascending to meet it.
That is not necessarily a flaw in their claim; a similar speed differential is an issue for atmospheric interception of the warheads from an ICBM. The trick to intercepting something at Mach 15-30 (although news reports suggest this rock might have been traveling at Mach 80) with something at Mach 5 is to launch from near its path and in front of its position, and that could realistically have been done. I don't believe the claim either, but not because of the relative speeds of the rock and the missile. I just assume that communist politicians lie.