We are a commune of inquiring, skeptical, politically centrist, capitalist, anglophile, traditionalist New England Yankee humans, humanoids, and animals with many interests beyond and above politics. Each of us has had a high-school education (or GED), but all had ADD so didn't pay attention very well, especially the dogs. Each one of us does "try my best to be just like I am," and none of us enjoys working for others, including for Maggie, from whom we receive neither a nickel nor a dime. Freedom from nags, cranks, government, do-gooders, control-freaks and idiots is all that we ask for.
Interesting hypothesis. But I don't buy the argument that just because it's long ago the accounts must be false.
That's the ultimate strawman argument, can be used to disprove anything you like, and has been proven false time and again.
Aural tradition alone can keep a historical record accurate for 500+ years, as was established early last century.
While no doubt the story has been distorted and embellished over the centuries (it's such nice religious propaganda after all), and the "pueri" probably indeed more likely poor people rather than young children, it's quite possible such a movement did indeed exist, and the supposed end in slavery and shipwreck is quite likely too, but of course the slavery especially is nowadays utterly in contrast with the politically correct viewpoint of noble muslim culture and therefore must be suppressed.
If there's mass distortion of historical record, it's quite likely this site you link to does more of it than those who originally penned down the account, and any errors between the two are errors in translation of the original (pig-latin) records.