No, it was the great liberal court, and Warren relied heavily on the remaining New Deal progressive justices appointed by FDR to cement in place his majority. Warren was a liberal, not a libertarian.
Sorry, but Earl Warren was a famous libertarian, that is why he used the mantra of “individual rights” to end local control and federalize everything.
Just like in the schools, it was libertarianism that destroyed the ability to control the students and run clean, orderly schools, because everything was a right, just as this ruling.
By the way libertarianism is liberalism with conservative economics, and even that wasn’t there at first.