Most people aren't doctors, epidemiologists, or scientists of any sort. Nobody can be experts at everything, so we rely on expert authorities to break things down for us. Since we're not experts ourselves, we cannot independently verify what the experts are saying, which means our relationship with them is built on trust. But what happens when a nation becomes so fiercely divided along political lines that we collect…
Talking more respectfully to them won't change it. It's not possible to talk to them, because most public communication is filtered through reactionary propaganda. For example, President Biden is generally respectful, but cannot reach them.
If we don't deal with this movement now, it will continue to grow stronger. Clearly there are no limits to it: Vaccination and masks to prevent a pandemic disease, attempts to overturn an election and seize power, etc.