To be completely honest, there are thousands of lawyers and judges and justices in the U.S. who would be completely competent justices on the U.S. Supreme Court. Few of the cases require any sophisticated knowledge of the law, and never forget, they get their choice of the top legal scholars in the country coming out of the top schools, to be their clerks.
Even an idiot like Sotomayor ("a wise Latina") has only rarely made an ass of herself, and never in her published opinions, which are written by others.
So if President Biden wants to preemptively disqualify 94% of the eligible lawyers and limit his choices to Black women, he can certainly produce one who will not make an ass of HIM (for nominating her).
But this whole thing SHOULD be an embarrassment to the Chief Justice, who frequently asserts in public that the Court is NOT a political body, as it unfolds as a completely and utterly political Kabuki Dance in the Senate before confirmation.
And note one thing as this plays out: It is only DEMOCRATS who slander candidates from the Other Side and vote en masse to refuse their confirmation. Many Republicans will vote to confirm Biden's nominee, assuming she is arguably qualified, even though they will abhor said nominee's politics and judicial philosophy. Republicans in the Senate have a real problem with integrity, a problem that does not afflict the other side.