In a blog published in Rafu Shimpo, he finally figured out why he didn’t.
The part of 70 plus old David Toriyama was played by a very capable James Saito.(pictured)
The 59-year old actor did an outstanding job handling the tense raw emotions of his character.
Tashima doesn’t disagree with that. What he does disagree with is denying the opportunity for a veteran senior Asian American actor.
I saw no reason, no creative justification, why Jim, who is probably 25 years too young and had to get heavy old-age makeup, was cast instead an actual senior actor. It’s especially disappointing, knowing many actual age-appropriate Nisei actors that could have played that role. That should have.
Tashima compares this to yellowface casting. You can read why in Rafu Shimpo.