Is it? I think it will take the industry to a very segregational place and that's not a good thing. The whole point of acting, specially voice acting, is that one can pretend to be someone else, fictional or not. And in regards to voice acting, how one look is even less of a factor. I don't know what criteria casting directors have when they choose one actor over another. It might be personal preference, it might be pure discrimination against a certain factor or trait, it might be perception of financial return, it myght be all of these or none of them. But it's dangerous and sets a bad precedent to generalize and run with assumptions for the entire industry in order to try to solve an apparent problem of equality of opportunity with equality of outcome.
In this case though, they admitted that it was purely out of ethniticity, which only feeds the idea that (voice) actors should take roles where they share certain immutable traits.
Personally, I'm not a fan of this decision, but it is what it is. The remaster does look great.