It's a bad look certainly, but I'm not sure I buy that argument. Raya and Encanto were led by Asian and Latin-American casts (nearly all Colombian in the case of Encanto). Strange World is rumored to have two black main characters.
I think you can either make one of two arguments:
A: Disney is blind to the PR optics of their decision, as a large company is wont to do.
B: Disney sees diversity as a value worth promoting/a marketing tool, but doesn't actually have faith when diverse voices are both behind and in front of the "camera".
At the very least, Pixar is actually doing the work to have the director's chair reflect the diversity of its casts, something Disney Animation hasn't cracked yet (hiring consultants and writers isn't enough imo). Notably, directors currently developing new films at Pixar include relative newcomers like Aphton Corbin (Twenty Something), Rosanna Sullivan (Kitbull), Kirsten Lester (Purl), Peter Sohn (Good Dinosaur), and Brian Fee (Cars 3). Only one white guy in that bunch. Obviously, it's incumbent on Pixar to support these filmmakers and support their stories. However, Pixar's been making aesthetically daring films and SparkShorts for two years now, many of which were spearheaded by diverse veterans and newcomers alike. Their path as a studio is set, and unless there is agressive creative meddling from Disney-proper, I don't think that will change.