The Special Editions simply don’t work without the prequels. We’re never told who Hayden is in any version of the OT, so if someone who hasn’t seen the prequels watches the 2004 or 2011 version of ROTJ, they would be utterly confused when Hayden shows up.
One would assume that Hayden was the ghost of Anakin because he’s right next to the ghosts of Obi-Wan & Yoda.
Why would anyone assume that? We just met Anakin and he didn’t look anything like Hayden.
I don’t know then. Trying to understand Lucas’s changes to the OT is like trying to understand a schizophrenic person while you are under the influence five or six different psychedelic drugs. It’s actually a work of genius, the levels he actually goes to piss off the people who have made him successful in the first place.