Yeah? Explain to me what clues are being given that you are being pushed or have accidentally fallen to your death outside of the attic window? And that the ghosts in the graveyard believe you to be part of their party? If it was Disney's intent for us to have passed on into the netherworld, they failed miserably at making it known.
For what it's worth to you, the illustrations and text are by Imagineer Collin Campbell. He had a little something to do with the Haunted Mansion's design.
Trust your own ears, man!
"Hurry back! Hurry back! Be sure to bring your death certificate, if you decide to join us."
"Beware of hitchhiking ghosts! They have selected you to fill our quota, and they'll haunt you until you return! Now I will raise the safety bar, and a ghost will follow you home!"
"If you would like to join our jamboree there's a simple rule that's compulsory. Mortals pay a token fee. Rest in peace, the haunting's free; so hurry back, we would like your company!"
So... what?

I fell, I died, I was part of the gang, but now I'm alive again?

I guess that makes me either a zombie of some sort or the Second Coming!
As for what Doom Buggies has to say on the subject, some of you seem to be glossing over the fact that it says "it has been suggested" and "it is a possibility."
Doom Buggies also makes mention of the bride's "ring" in the Magic Kingdom. There was never a ring. There was a hole in the ground for a gate post. Everything else was made up by CMs/fans. As I mentioned earlier, one hourly CM even took it upon himself to try to restore the ring after the hole had been filled in by sidewalk repairs.
It's worth noting that Doom Buggies discusses these things under the heading of "Myths and Legends," not "13 Facts About the Haunted Mansion That You Didn't Know." It's probably also worth noting that there is a notice at the bottom of the site that says it is "by/for fans" and that it is "not affiliated in any way with The Walt Disney Company."
Again, saying something doesn't make it so, even when it comes from an "Imagineer" who may be trying to embellish a story after the fact.
Keys to the Kingdom Tour Guides love to tell everyone that there are "chess pieces" on the Haunted Mansion's roof. And that all of them are up there "except for the knight, because it's night inside." A cute story, although debatable that all of the other chess pieces are actually represented, but it's simply not true. The "chess pieces" are architectural elements that were quite common to the 18th century Hudson River Valley structures that the Magic Kingdom's mansion was based upon. If you take a look at the
Harry Packer Mansion and other structures that served as inspiration, you'll find these exact same "pawns" and "rooks." And I'm quite certain these buildings weren't always "night inside." Don't want to take my word for it? You can read about it in Jason Surrell's book,
The Haunted Mansion: Imagineering a Disney Classic. Or, you can simply study these old buildings yourself. The similarities are quite remarkable.
My apologies for my part in that! The Haunted Mansion is a subject dear to my heart. And, as I mentioned earlier, I also have family who have worked inside of it for a number of years.
On subject, I believe the new interactive element to be fun, but as others have said, 2D video projections do not have the same magic as the original effect. It's a shame that the Imagineers feel compelled to fix things that aren't broken. Job security, I suppose.