"I now understand that people of color should always voice people of color. We missed a great opportunity to represent the Vietnamese-American community..."

"... accurately and respectfully, and for that I am truly sorry. I applaud all those who stepped away from their voiceover roles in recent days. I have learned a lot from them. In hindsight, I wish that I didn’t voice the character of Diane Nguyen," wrote Alison Brie, about her role on the animated TV show "Bojack Horseman," quoted at Vulture.

Bojack Horseman showrunner Raphael Bob-Waksberg has also expressed regret over Diane’s casting, recently explaining his decision on Twitter and telling Vulture in 2018, “I allowed myself to believe that the world of animation was a little different than the world of live action. It is in some ways, but that’s not really a good excuse.” Bojack Horseman wrapped up its sixth and final season in January 2020.

So it's all over. No going back. Might as well express regret. Maybe he just regrets that he casually stuck a Vietnamese name on the character. Was there anything really "represent[ative] the Vietnamese-American community" about Diane Nguyen on "Bojack Horseman"?!

How awful for these artists to cave to manipulation to disavow their own good work! I'm guessing Bob-Waksberg originally thought it was cool to use a Vietnamese name for a character without it meaning anything more than just a little casual diversity. He didn't know he would bite him in his Horseman ass one day.

Here's an interview with Bob-Waksberg from September 2018 (also at Vulture):