You will always find people to "validate" crazy stories and ideas. Hence the reason Ford is a demigod to a certain segment of Toronto.
But it doesn't mean the ideas aren't batsheet insane.
Answer me this (because even the link doesn't answer it): Why? Why would Ford fake his death? What would the point be? He's pretty much gotten off scott-free of every bad thing he's done; he has nothing to hide from. He has money. He has popularity. He has his own little fiefdom. There aren't angry mobs at the palace doors waiting to string him up in town square. The worst thing in his future would be testifying at someone else's trial that might embarrass him a bit (he really has little shame). Hardly worth eschewing everything for.
And again, with all conspiracy theories, there are vast numbers of people who'd have to be bought off or in the loop for everything to come to fruition. Every doctor, nurse and orderly at the hospital who dealt with him after his death. The morgue and morticians. His family. Death records faked. Life insurance policies faked. Estate transfer faked. Credit cards, bank accounts, tax filings… All of this fraud for what? To escape a public eye he loved so much?