That´s cause they choosed a way to overoptimistic name for it.
It´s next to no "reference" in it, it´s just a nice collection of build and upgrade tips for making the blaster, with most tips/technics nothing new for modelbuilders (but maybe for costumers).
Reference is something with dimensions and appearances of the original, like Zeros (sadly unfinished) work, not nice looking alterations on copied parts.
I hope he is well, wherever he may be.