Neither the quote nor the statement answers the core question. If the Executive is performing the function of the Judiciary - what is the Judiciary’s actual value/role? Secondly, when a Liberal is elected - will you be happy with their interpretation of constitutionality? Remember, they have a radically different view and despite all our wishes - Liberals do get elected.
When it comes to supporting the Constitution, the obligations of the Executive and the officers of the Judicial branch are identical. So, I don’t really know what you’re talking about.