Years ago when I was creating a lot of work for a publishing company it was specified that I had to include x number whites, x number black, x number asian, etc. It was so ridiculous that they even specified hair and eye color for the various characters. My belief then (and now) if that is what the client wants it is my job to deliver it and deliver it to the best of my abilities since that is what I was hired for.
That's a different perspective from the "Own Voices" idea. Own Voices is simply a form of racism and bigotry as it segregates, separates and compartmentalize people (the artists) by race. While popular with "educators" it is wrong for the real world.
If a person is a good artist (written or drawn) their audience will recognize a white person. They will recognize a black person and they will recognize an asian, a hispanic, etc, etc, etc.
The same goes for authors. Guess what, Rowlings was never a 10 year old boy wizard yet she wrote Harry Potter. Twain was not a black slave yet "Jim" from Huck Finn is a well rounded and believable character that is from the best piece of American fiction that was ever written
What I tell my kids when they are confronted with this in school is to substitute "white or caucasian" with whatever other race you are being told and if the person telling you would have a problem with the statement using white, it is racist.
You can agree or disagree and I am fine with that.
Quality art (written or drawn) is simply quality art. It does not matter what color the person who created it is and for that to matter and make a difference is bigoted.