You are indirectly implying that and you know perfectly what I mean.
Anyway, a few online articles means nothing, what tops the charts is what people in general think is good music, everything else is just a biased opinion.
So I'm just gonna say all races have their quality artists.
I'm not black and i 100% agree that black people have and are still making the best music. In every genre and In different time periods. From Michael Jackson to Kendrick Lamar
Music knows no boundaries. The modern music is build on older traditions and influences of multiple ethnicities and races and there always were brilliant (and terrible) artists from all the races.
Yes, I am a Pitchfork ass kisser, but hey... I also included and referenced Metacritic the most, which includes a variety of other critics.
To answer your second statement, yes you are correct, but for an artist to be rated so high, the source of the music comes from them, and/or delivery. For example, Kanye can have a white producer, but the direction of the music is still fom him. But, Aretha may have had a white producer and no contribution to the track whatsoever, but her vocal delivery brought it to amazing heights - that no other artist could achieve.
I don't like those type of statement because I think music has no color but if we look back they've always made music that inspired everyone and was awesome. There genius in every 'race' obviously but yeah.
Also... again with whites ignoring all the other races out there. 
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