The issue, though, is that they are not cultural depictions but caricatures. Trader Sam, for example, was not created on the basis of meticulous research into the customs of a particular group of people, crafted in consultation with these people, and presented to visitors on the ride in an educational fashion. It's a gag using, in Anaheim, a figure designed to look African and, in Florida, one designed to be vaguely South American. The representations play on outdated stereotypes about 'uncivilised' people for humour and a little excitement, and they're certainly not respectful or accurate representations of any particular culture.