As the story is 2nd(3rd?) hand I don't know if it was a case of failing to RTFQ2 or whether he was genuinely led down the garden path at interview (which he apparently claims )
I am sure long term it is fine, think he was just a bit peeved as he felt the goalposts had narrowed en-route from selection to employment.
My LGW based NAS colleagues are hoping that the eventual permanent contract will broadly resemble Easy, which they have said is very acceptable thanks.
If NAS want to retain a large percentage of their new guys, it would be better for them if it did.