Who, funded by.....?
Just silly!

which scientists, exactly, are saying this?

g

"are nothing more". I am unaware of any scientists saying "are".

the hologram models and simulation models are just possible models, not claims of truth.

as for my opinion, until someone explains why it would matter, I simply don't care.

There’s something more than that simulation, something behind it that makes it work. You can’t simulate conscious awareness in any event.

If this is the matrix, then I want a refund. The server is overloaded, the factions aren’t balanced and the play time is too short.

It's been theorized,our universe is a bad Science project in an Aliens World, that got a F minus,up on a shelf,neglected and forgotten.....