I am rather ambivalent. Certainly Kavanaugh has seemed never to have grown up, but people get on the court and surprise those who confirmed them. Earl Warren, as Attorney General of California in 1941 called for all the Japanese Americans to be rounded up and put in camps. He later acknowledged that he was the driving force that lead to the Democratic governor signing the internment order. A life-long Republican, Eisenhower appointed him Chief Justice in 1953. He later became a close friend of John Kennedy, however, and in 1962, registered as a Democrat. When I was a kid, you would see billboards by he roadside calling for him to be impeached.
You never really know what you're going to get.