Do you support this line of thinking for other ethno-homogenous countries? Are China India and Japan not serving their constituents the best they could because their SCOTUS equivalent judges are not diverse?
The USA was 90+% white before 1965, so for the majority of its history it had White SCOTUS judges. Do you seriously think that because the SCOTUS was 100% instead of 90% white that a great disservice was done to our country.