Oh for sure. Get more people of color and the LGBTQXYZ+9 crowd into voice acting. The more the merrier, yadda yadda. I just don't think its doing black people any favors to fire white voice actors from shows because of the color of the character they're voicing.Which is a fair point. That said, I've had conversations with people of color who are quite passionate about seeing more non-white actors getting work and don't have a lot of trust in the system to not be racist about it and... Basically, I get where they're coming from. Everybody draws the line differently and at some point we're going to have to do something about it.
I would simply put it as hire the right voice actor for the roll, and of course have enough minority voice actors that shows are spoiled for choice on who to cast, so that its only the actor and their talent to consider rather than their race/gender.
And if a white dude gets cast as a black character, then that's the voice they wanted for the show. And vice versa. Cast black voice actors as white characters if that's the voice you want.