Got this from Vox Day:

In 2022 country star John Rich was at a dinner of some sort, and Trump asked him directly why he was getting booed at his rallies when he would talk about the COVID vaccine. John hits him with the truth.

https://amgreatness.com/2025/04/07/john-rich-says-he-had-to-explain-to-trump-in-2022-why-his-supporters-were-booing-him-every-time-he-mentioned-the-covid-jabs/

I didn't archive that, because I think it would break the video embedded within it. It is a clip from the Try That in a Small Town podcast.