Having never met a Mayan I guess not. But I think it a very good assumption which I am willing to make.
Having seen photos of both Mayan decedents and Jews native to Israel, I dont think the slight differences in their complexions would support the theory that Jesus would be the White God of the Mayans.
Mormons can believe what ever they like I am not a religious bigot.
But to convert me they will have to come up with better arguments to support their doctrines.
Then, don't you believe the statement should have been labelled an assumption, at least, instead of a certainty?
I wasn't there...and nobody I know was there...so I don't have the foggiest idea what Quetzalcoatl really looked like -- nor how those who first saw him viewed themselves.