I don't think so. I think the phrase "trust the science" has caused massive damage, and that's not been individual politicians. Repeatedly changing the story, and saying clearly unknown things as absolutes over and over, and collaborating with social media (and traditional media) to wipe out conversation about these things - that later change anyway - is what's done it. People in the US seem already slightly tilted away from authoritarianism. They're sensitive to this stuff.