Critical Thinking In Justice

According to Wikipedia, "Since the 15th century, Lady Justice has often been depicted wearing a blindfold. The blindfold represents objectivity, in that justice is or should be meted out objectively, without fear or favour, regardless of identity, money, power, or weakness; blind justice and impartiality."

Isn't it curious that Lady Justice was always a woman, and that the first woman justice of the US Supreme Court was Sandra Day O'Connor in  1981?

I view this description of Lady Justice as a representation of critical thinking.

But, if I look at the recent rulings of the US Supreme Court, I do not see evidence of critical thinking. I see two voting blocks with one judge moving between the two blocks. Is this really justice?