That's on par with saying "It's already on fire, who cares if I throw gas at it".
150K untested migrants pouring in and living/traveling in confined quarters targeting population centers is unacceptable during a pandemic and wildly inconsistent with restrictions that were placed on Americans.
People change their mind on what to eat for breakfast or what shoes to wear, they do not change their fundamental beliefs routinely on whim. The majority of those who are not getting vaccinated are making that choice based on a fundamental distrust of Government and pharmaceutical industry.
No one is waking up tomorrow and deciding "Gee, yesterday this situation was rife with censorship, lies, institutional deception and malice but they really cleaned their act up".