The fact that Panchito is the only one of the characters who is Mexican with Donald being American, obviously and Jose hailing from Brazil as i have pointed out several times and the underhanded implication that Mexico and Brazil are interchangeable is probably culturally offensive to say the least.
It'd be boring if everyone always agreed 100%, but I don't think this was ever intentional on Disney's part.
Curious...have you seen the 1944/1945 film?
First of all, most who originally viewed 3C in theaters were previously introduced to Jose and already knew that he is Brazilian from 1942's Saludos Amigos (& for those who didn't know those tidbits, the middle third of Three Caballeros 1944 film was all about Jose telling Donald about Brazil).
I always realized since my first ride of the revamp in 2007, that Disney was trying to re-create the format of
final third of the film (all about Mexico) but for the Mexico of 2007 (vs. 1944). The problem was/is that even by 2007 I don't think the majority of riders even heard of the 3C. Now its exasperated by the passage of nearly
another 20 years (and there are probably very few still left, if any, who even remember seeing the 1944 film
in 1944/5). And it never had a full theatrical re-release. Only (partial) TV/video/Disney Channel/Disney+
I do like the AAs at the end for their historical value but as an attraction
(not counting the fact they're over 55 years old) I think they also suffer the same problem the TBA AAs have...too close to water.
As much as I'm "stuck on Donald Duck," I agree 100% Coco is a "perfect" fit for the Mexico Pavilion...provided they solve the problem of
complex AAs near water.