Absolutely.
And to say "this opinion is not grounded in experience" is a worthy note, but doesn't make their conclusions wrong.
As a generality people suffering a situation aren't able to take a measured approach - emotion gets the better of us - so it's not just a case of experiencing a situation. Not being subject to something doesn't discredit your viewpoint.
If you tell me I need to do sharding to improve my database performance, or whatever, and I say "this is a database of Chinese people, your opinion is invalid as your not Chinese" then I'm just being xenophobic.
People can have way more in common with others of different skin colour than they have with someone of the same colour. It's a people issue.
Focusing on segregating people's arguments by skin colour, rather than by validity of their arguments is so antithetical to the whole object of removing unnecessary discrimination that's why I felt I needed to comment, and I stand by that comment.