COVID bigots demean people for wanting the right to make their own decisions, and not be forced into taking actions like being vaccinated or wearing masks. Unable to process the libertarian position for what it is, they dismiss it as ignorance or selfishness.
Nor is an alleged non-understanding or rejection of science on the part of conservatives and libertarians the problem. The problem is in the mandate itself, coming not with the consent of the governed, but from the governmental elite, who consider themselves our moral and intellectual betters. Most Americans it turns out, don't like to be ordered around.
Liberals don't like Kavanaugh, they are deathly afraid of him overturning Roe v. Wade, and would prefer a justice who believes in a "living Constitution". Conservatives like him because they think he won't legislate from the bench. Libertarians are concerned that he will opt for an interpretation of the Constitution that favors the government over individual rights.