We can only hope. Some who were good on paper disappointed us. Sandra Day O’Connor, for example, became pretty liberal after starting out fairly conservative. Blackmun went from being a conservative lawyer to a left wing jurist willing to create rights out of whole cloth. Kavanaugh seems like he is fairly well grounded in the tenets of strict construction. But you can never know how a person will react to the possibility of becoming a god-like authority from on high. The ability to do what they want unchecked is tempting to many.
You are so right!