So? That doesnt fix the crux of what was supposed to be the issue with these recent films. It doesn't help looking at the rest of the cast. Why is it that characters always switch from Asian and not the other way around?
The problem is you're still thinking the character is Asian, or more specifically Japanese, however the whole point of the adaptation to America is to make the characters American. So anybody could've played the role.
As far as the rest of the cast. The role of Hugo, Alita's love interest, is being played by Keenan Johnson in what they describe as "ethnically ambiguous". I'm not sure what his full ethnicity is, but he looks part Asian.
Lana Condor is playing the role of Koyomi
Leonard Wu is playing the role of Kinuba