I think something like that is a little too far fetched to be true. There are so many questions that it raises. I think it's just a conspiracy.
Perhaps. But there are already some confirmed facts which make it plausible (but I agree it's not been confirmed).
For example it's well known the Cardinal in the vatican was openly against Pell investigating him for corruption. That same cardinal was sacked in September with suspicions of corruption surrounding this event.
So you have a corrupt Cardinal who didn't want Pell investigating him, you have some very dubious allegations in Australia. Many of these allegations were thrown out by a magistrate before they reached a trial with the magistrate suggesting some of them were ridiculous in their nature.
The most plausible of the allegations were the two allegations made by one man. The second of the two allegations were ridiculous (George Pell grabbed my dick in an open hallway with ~50 people around them, yet no one saw a thing).
We also know that the boy who made these allegations waited until after the other choir boy had died, before coming forward to police. These seems unusual, given the other choir boy would have been the only one who could refute the allegations. This same (now dead) choir boy, is on record denying that George Pell ever assaulted him or the other boy.
If any of the people who made allegations against Pell were paid for their evidence, their needs to be a proper investigation and people put away in jail for years.