Yes, uniform ablation is hard to get. If you ever have the chance to look at an old Apollo capsule after reentry, the heat shield looks like the end of a cigar.
I don’t know what they are using to minimize heat transfer. At Mach 6, the temperature of the air over the missile will be ~4,000 deg F, so there are some materials that would slowly ablate at these temperatures, which would reduce the surface roughness.
I really can’t speculate too much more at this point, but from what I know, I think that the speed is not ‘fake news’. As for being “unstoppable”, it may be for the British navy.
Seems possible.
Very tough and I suppose it can be applied by sputtering.
It seems to not necessarily be "fake news".
There is no ablation on the shuttle tile. Perhaps they stole the technology?