I am not sure if there are legal grounds for a lawsuit, but when you think about it, the coin creator did make a false claim.
There were many false stories, certainly.
But is there an actual false statement directly from Harris?
Mostly he seems to have said things like 'designed to be the sovereign currency', which is true.
I don't know if you can actually find his fingerprints on the misinformation.
I don't recall, to be honest. But if you go to the maza website right now, you see this:
First Sovereign National Crypto-Coin In History
How can it be the FIRST sovereign national crypto-coin, if it's not currently a sovereign national crypto-coin?
They probably can get away with it, as I have no idea what legal terms or claims are needed for a lawsuit. But they certainly imply it's an official currency of the tribe.